FIA is community supported website. When you purchase through links on our site, we may earn an affiliate commission. Learn More.

Goldfish Care, Classification, Breeding & Fun Facts

The Goldfish is a freshwater fish native to East Asia and has been developed as an ornamental fish for gardens and aquariums.

It belongs to the Cyprinidae family, and its scientific name is Carassius Auratus.

The Goldfish has been reared and bred for centuries in China and Japan, resulting in various forms and colors.

Species Overview


Over centuries different species of the Asian carp have been bred as fish food in Eastern Asia. The Asian carp was either grey or silver, but a few were produced as red, yellow, or orange due to some mutation.

History shows that during the Tang Dynasty (618 to 907 AD), the common carp was bred and reared as ornamental or garden fish. These varieties underwent natural mutation resulting in yellowish-orange color. It led to the selective breeding of this variety for gardens and ponds.

With the advent of the Song Dynasty (960 to 1279 AD), the breeding of goldfish was firmly established, and the gold or yellow ones were considered to be fit for royalty. People outside the imperial family were forbidden to keep them.

The Ming Dynasty (1368 to 1644 AD) brought about the tradition of raising the fish indoors, and it was during this time that the first occurrence of the fantail was recorded.

It was introduced in Japan in 1603 and 1611. This colorful fish reached Portugal and from there to other parts of Europe. By the 1620s, It became associated with good fortune, and it became a tradition to gift these to each other.

As the fish became more readily available, they lost their good luck charm status, but they became one of the most popular pet or ornamental fish the world over.

Fish lovers started to breed them with other fish such as koi to produce different types of goldfish-koi hybrids which resulted in hundreds of breeds being around today.

The appearance of the fish has been one of the most outstanding reasons for its popularity.

In the olden days, people found them so pretty that they refrained from eating them. They are easy to care for and make great first pets for many.

Natural Habitat

The goldfish’s natural habitat is slow-moving freshwater, and they seem to thrive in slightly muddy water. Original ancestors, the Prussian carp, lived in the freshwaters of northern Asia.

They are a hardy species and can survive temperature fluctuations, pH level changes, low oxygen supply, and even muddy or cloudy water. For this reason, these colorful, ornamental fish survive well in human-made ponds.

However, with all the breeding activities and the evolution of various fancy types, some have become a little too delicate for ponds.

Fancy varieties such as the Bubble Eye, Celestial Eye, the Lionhead, Veiltail, etc., are far too delicate to survive in ponds. These are the best for aquariums, and they thrive in well-maintained tanks or aquariums with specific aquascape conditions.

Red veiltail goldfish
Red Veiltail Goldfish

Cognitive Abilities

It may come as a surprise to many that your beautiful goldfish also has impressive cognitive abilities and learning skills.

They tend to swim to the front of the glass or swim about in the tank whenever the owner comes near to the tank. They can also go near the surface whenever it is feeding time.

Over time fish will learn to associate certain people with food and may even exhibit actions similar to ‘begging for food’ from their owners. After a few months, you can even train your fish to eat food from your hand.

Your fish may also hide when new or unfamiliar people come near the tank.

One of the most widespread misunderstandings about this species of fish is the attention span and memory. The popular belief is that fish have memories that last only seconds. It couldn’t be farther from the truth.

The ordinary memory spans well over three months, and they also can recognize shapes, colors and different sounds.

Many researchers have proved that positive reinforcements can train fish to perform tricks and respond to specific signals.

These behaviors are significant proofs that average goldfish memory span is not just 3 seconds, and they do have a good range of cognitive abilities.



Fish come in many colors and color combinations. But it is rarely found in gold. Their colors range from orange to red to black to white and several varieties of these colors.

The color difference is also dependent on the scale type. Scale types include metallic, common nacreous or calico and matt.

The most common color is orange or red.

Body Shape

They have three basic body shapes:-

  1. Long and streamlined with single caudal fins. Examples include Shubunkins and Comets.
  2. Rounded, deep and short bodies with twin caudal fins. Examples include Black Moors, Veiltails and Orandas.
  3. Rounded, short and less rounded bodies with no dorsal fins. Examples include Lionhead, Celestials, Telescope Eyes, and Bubble Eyes.


They have three basic fin types:-

  1. Single Caudal Fins: The only single finned varieties are Comets, Shubunkins – Bristol, London and American, and Common Goldfish.
  2. Twin Caudal Fins: These types have twin caudal fins with dorsal fins. The finest examples are Fantails, Butterfly, Veiltails, etc.
  3. Twin Caudal Fins without Dorsal Fins: These do not have dorsal fins and include types like the Bubble Eye and Celestial Eye Goldfish.


Another differentiating feature is the eyes. The four basic Eye types are:-

  1. Normal
  2. Upward facing such as the Celestial’s Goldfish eyes
  3. Bulging eyes the kind that Moors have
  4. Fluid sacs under the eyes. These are the ones with big eyes like the Bubble Eye Goldfish.

An important fact to remember is not to mix Goldfish with normal eyes with the other eye types. The ones with the normal eyes will get to the food faster than the upward-facing ones or the telescopic eye types. It will result in a lack of nutrition in the other eye types.

Telescope eye goldfish
Telescope Eye Goldfish


Growth depends entirely on living conditions and diet. The typical fish can grow up to 12 inches, while the comets can reach 8 inches comfortably. Fancy fish are smaller and grow to about 5 inches.

Behavior & Temperament

They are mostly peaceful creates that live by the mantra ‘live and let live’. However, fish have unique personality traits that vary from one fish to another – there is no one size fits all rule here. You will soon learn over time that some are more active than others and their habits.

They spend most of their time hanging around the middle portion of the tank. Use this as a guiding principle when selecting other tank mates.

They aren’t fast swimmers, which means they don’t have the speed needed to chase other fish or escape their harassers. Make sure you keep them separate from aggressive species because they won’t be able to defend themselves.

The only times your fish will become ‘adventurous’ in the tank is during breeding and feeding. During breeding, males will try to impress females, and at feeding times, they’ll race to get the food before their brethren.


In general, the average lifespan of a fish is 10 to 15 years. Some records show a fish living almost 40 years. However, determining the age of a fish will depend on quite a few factors.

The first and most important factor is your fish’s genetics and their early development conditions.

Fish have been domesticated as pets for thousands of years; hence, it is impossible to determine their lifespan in the wild. But the common carp, the known ancestor of the fish, can live up to 30 to 40 years.

It is also a fact that aquarium-raised fish has a shorter lifespan than the ones presented in ponds.

The best way to increase the lifespan of your aquarium inhabiting fish is by maintaining excellent tank conditions. Keep a good quality filtration system and ensure you maintain regular cleaning processes.

Tank size is another essential factor to keep in mind while ensuring your fish’s healthy life and growth. Small tanks tend to inhabit their development, and they can also get dirty much faster, resulting in infections and diseases.

Goldfish Classification

Classification of the goldfish has been done in two different ways – The Chinese classification and the Western classification.


Lionhead goldfish in aquarium
Lionhead Goldfish

Chinese classification has been categorized into four types:-

  • The Egg: These have rounded bodies with no dorsal fins. The Lionhead falls under this category.
  • The Dragon Eye: These types feature distinct eye formations that are protruding or extended. The finest examples are Telescope Eyes, Celestial Eyes, Bubble Eyes, etc.
  • Wen: These are with a fancy tail and dorsal fins. They have characteristic head growth. The best examples are Orandas and Lionhead.
  • Ce or Grass: These are the non-fancy types of goldfish and are usually given out at fairs as prizes or gifts.
  • There is another classification known as the Wakin and Jenkins, which includes types with double tails but the shape of their bodies is like the Comet Goldfish.


Shubukin goldfish
Calico Shubukin Goldfish

The Western Classification is based on their body types, tails, sturdiness and availability.

  • The Common Goldfish: These are hardy and great for beginners. They can be kept in outdoor ponds as well as aquariums. Comets and Shubunkins fall under the Common variety of fish.
  • Fancy Goldfish: Fancy goldfish feature double tails or extended eyes, or head growths. They have unique features, and some may be far too delicate to be kept outdoors.
  • Single Tailed Goldfish: These are sturdy and easy-caring fish. Can keep it both indoors and outdoors. The Comet, Shubunkins, Nymph and Tamasaba are the best examples of this type.
  • Double Tailed Goldfish: These have double tails accompanied by specific physical traits such as protruding eyes or unusual head growths or egg-shaped or rounded bodies, etc. Double tailed include Fantail, Veiltail, Orandas, Celestial Eyes, Lionhead, Ryukin, Butterfly tail and several more.
  • Rare Varieties: These are relatively new types of goldfish or those found only in specific places. The Izumo Nankin is one such example. This kind is found only in Japan and rarely seen in the west.

Types of Goldfish

There are almost 300 varieties, but out of these, 24 types of goldfish are the most popular and best for the aquariums.

Setup for Goldfish

Tank Setup

Keeping goldfish in aquariums has been practiced for centuries. These colorful, ornamental fish are cold-water fish and can live comfortably in unheated tanks or aquariums.

However, the image of a goldfish in a bowl has been quite prominent, and it gives the wrong impression for beginners in keeping these creatures as pets.

Bowls are not an option when it comes to giving your fish home. A long and rectangular shallow tank is much better than a deep or tall one for better water to oxygen ratio.

Setting up an aquarium is an essential aspect of goldfish keeping. You have to put it in the right place where there is good natural light but not too much of it.

If your tank is kept in a too dark place, then your fish will not get enough light, and their colors will fade.

Decorations, plants and other accessories are suitable for the fish, enhancing the look and feel of the tank.

Wash the substrate in tap water before you spread them in the tank. If you add plants to your tank, rinse them in tap water too before placing them inside. Plants can be live or fake; however, live plants can also be good food sources.

Be careful with your decorations and avoid using those with sharp edges or abrasive ones. It is particularly essential if you have Bubble Eyes, Celestial Eyes and Telescope goldfish. The sharp edges may tear the delicate eyes of these fish.

Thrive well in aquariums and adjust to a wide range of temperatures. The ideal water temperature range for an indoor tank is between 68 °F to 75 °C. The perfect pH level of the water should be 7.0 to 7.4

Should determine The tank size based on the number of fish you intend to keep and the size of the fish. Ideally, one gallon of water per inch is the benchmark for most tank sizes.

An adult Common or Comet, or Shubunkins will need a minimum of 20 gallons per fish, while a Fancy like a Fantail or Oranda will need a minimum of 10 gallons per adult fish.

All types of Goldfish can be kept in the aquarium, from common to fancy to rare. The critical thing to keep in mind is that they should be similar in character and behavior.

Pond or Outdoor Water Body Setup

Fish are quite popular as a pond or outdoor fish due to their colors and ability to survive the fluctuating temperatures outdoors.

Some types can even survive in ponds in freezing temperatures provided the pond is not completely frozen, and there is still enough oxygen in the water.

The Common Goldfish, Shubunkins (London and Bristol), Comets, Wakins and sometimes Fantails can be kept quite comfortably in ponds all year round in tropical and temperate climates. At the same time, some types such as Oranda, Veiltail, Lionhead and Black Moors should be kept in ponds only during summers.

The size and depth of ponds can be designed and constructed according to the types and number of fish you keep. Ideally, the center should not be less than 80 centimeters to ensure that the water does not freeze in winter.

During the winter season, the fish will seem a little sluggish, and they will prefer to stay on the bottom of the tank most of the time during cold weather.

These fish are quite messy; hence a high-quality filter will be an excellent addition to the pond. It will help in clearing the waste matter and keep the pond clean.

Plants are also an essential addition to the pond as they also help in the filtration process. Plants and vegetation in the pond are also a great source of food.

It is also an essential part of fish keeping to include other goldfish species or other fish or aquatic animals in the fish pond. For example, you can add Ramshorn snails as they will eat the algae growing at the bottom of the pond.

Another essential factor to keep in mind while maintaining fish is including fish species that eat fish eggs. It will help keep their population under control in the pond.

Water Conditions

The health and lifespan of your fish are primarily dependent on the water conditions of their habitat. Although fish are known to survive in tropical to near-freezing water conditions, they still need steady temperatures to thrive when kept in aquariums.

Keeping the temperature range of the water table is an essential part of fish care. The ideal temperature is between 68 °F to 74 °F. Fish thrive in soft water, so the pH level should be in the range of 7.0 to 7.4.

Keeping the water clean is also an essential part. The first step is to pick the right filter. A biological filtration system works well as it helps to keep the water cycling and debris free.

You can also use a siphon to remove excess debris from the gravel. Can maintain ammonia levels in the tank by doing a weekly 10% water change for new tanks and a 25% water change monthly for well-established tanks.

Changing the water in time helps maintain the water’s pH level and eliminate growth-limiting hormones and clear the sediment build-up in the tank.

Tank Mates

Oranda goldfish
Oranda Goldfish

The fish is a social animal and will love to have company in the tank. However, it is crucial how you choose your goldfish mates. Know the essential personality trait and behavior of your fish before you decide on its mates.

There are over 200 distinct types of species, and each has its specific features and requirements. Every kind of fish has its characteristic trait, and they mix mostly only with their style.

It is necessary to remember that one cannot keep slow-moving fish with fast-moving ones. A Comet and a Celestial Goldfish will have different tank mates given their specific characteristics.

When choosing your fish companions, you will need to keep the following points in mind:

Temperature Preference

If you are keeping different types of fish in your tank, they should have similar temperature preferences.

For example, tropical fish require warmer temperatures, while your fish prefers cold water. Hence cannot put varieties be put together.

Size and Fin Length

Fish are omnivores and hearty eaters. They can eat smaller fish and invertebrates in the tank.

If you keep minnows, shrimps, or snails in the tank, there are chances that your fish will land up eating them.

Your fish can also be a bit of a bully, so they might harass fish like Angelfish if they are together in the tank.

Fish also tend to nibble at the long fins of their companions. So ideal companions for them should be those who are of the same size with shorter fins.

Swimming Speed

It is wise to keep your fish in a group of fish with similar speed and agility. Single-tailed and slim-bodied fish are fast swimmers, and they will land up dominating the slow-moving ones in the tank.

Feeding time will be a significant problem for the slower ones. The fish will outrun them for food.

Behavior and Personality Traits

Fish are a peaceful breed, and they are not aggressive, nor do they establish territories. Hence it is essential not to keep them with the bold and territorial types such as the tiger barbs or African cichlids.

Ideal tank mates for your single-tailed are Shubunkins, Comets, Common, and Ryukin.

Best Companions for your fancy can be Black Skirt Tetras, Blood Fin Tetras, Rosy Barbs, Giant Danios, etc.

Ideal Mates

Functional tank mates for your fish include those that eat the algae that grow on your accessories. These are Apple Snail, Rubber-Lipped Plecostomus, Bristlenose Plecostomus, etc.

Scavengers or bottom dwellers mostly stay at the bottom of the tank and eat up the leftover food and dying vegetation. Corydoras Catfish and Hillstream Loach are great bottom dwellers.

Food & Diet

What does a goldfish eat? It is something that many would like to know. It is essential to understand what to feed your fish to provide them with the best possible nutrition.

Goldfish are omnivores and will eat almost anything. They are also opportunistic eaters, which means they will continue eating as long as the food is available for them.

For this reason, most fish have digestive issues. Overfeeding will also lead to more waste production, ultimately leading to excess production of toxins in the tank. It will lead to infections and diseases in the fish.

So it is of utmost importance to understand what they can eat and how much is just right for them to ensure healthy growth.

Fish in your tank will need less food than those living in the wild as they are less active. Specially formulated fish foods are the best for them. These have less protein and more carbohydrates than traditional fish food.

Fish food is available in pellet and flake forms. Feed a combination of both, so they also get variety in their food. Pellets sink and flakes float, allowing your Goldfish to eat at different levels.

You can further enhance the nutritional content of the food for your fish by adding other treats to their regular diet.

These can include peas, brine shrimp, bloodworms, leafy greens, boiled carrots, boiled zucchini, boiled cucumbers, orange slices, chopped grapes, watermelon, cooked rice, mealworms, and daphnia.

This extra food or treats should not form the main diet of your fish as these will not provide the balanced nutrition they need. They should be given occasionally and in small quantities.

The best diet should include fish food daily and once or twice a week, give them the extra food or treats for variety.

Remember to clear away any leftover treats after a couple of hours to avoid overfeeding or rotting.

Feeding Tips

  • Fix and maintain feeding. Feed your fish at the same time daily. It will also develop their cognitive abilities. They will recognize you and know their mealtimes.
  • Feed your fish twice or thrice a day for one minute with tiny portions. Drop small amounts so that you can gauge how much is needed without leaving too much waste.
  • Feed treats only twice or thrice a week and adds variety also to get different tastes.
  • Permanently remove uneaten food and treats within 15 to 20 minutes of feeding. It will help keep your tank clean and also avoid overfeeding your fish.
  • Do not feed bread as this will expand in the stomach and may cause constipation.

Breeding & Reproduction

Fish require conducive conditions to grow and reach sexual maturity. They need the right amount of water and a healthy and balanced diet.

Today, most fish are bred in captivity, especially in pond settings. During the breeding time, which is usually in spring, males and females are kept with the right temperature changes.

Males chase females that are carrying eggs and bump and nudge them to release the eggs.

The goldfish life cycle begins with the egg. They lay eggs that attach to aquatic plants such as Elodea or Cabomba. These eggs hatch within 48 to 72 hours.

It takes about a week to ten days for the fry or babies to assume their shape, but it may take longer for them to develop into a beautiful gold color.

Over time and with selective breeding, a lot has altered the breeding process of the typical fish. Some types are not able to breed naturally due to the alteration in their shapes and physical attributes.

Hand Stripping is a human-made method to assist fish inbreeding, but this process can harm your fish and cause permanent damage if done incorrectly.

Breeding in captivity has another significant problem for fish. Some adults tend to eat the young ones that they encounter.

Hobbyists breed their fish by selecting adult specimens and allowing them to reproduce naturally, then selecting and separating from the fry the ones that do not meet the specific pedigree requirements.

Fry Care

Once spawning is concluded, it’s time to remove the eggs. Parents will eat their own if you leave them in the tank. Remove the eggs (or preferably the plant that contains them) and put them in a smaller try for your fry.

Make sure the fry tank has similar conditions as the main tank at around 65° Fahrenheit. Use a heater to increase the temperature if necessary gradually.

When the fry hatch out of their eggs, they’ll lay on the bottom. During this time, please do not feed the fish fry until they start swimming. Once they’re ready to eat, provide them egg yolk.

Once they’re old and big enough, transport your fry to the main tank.

Tosakin goldfish
Tosakin Goldfish

Common Diseases

Fish are a hardy breed, but they fall sick and may fall victim to fungal infections, bacterial diseases and several parasites. Usually, this happens when the water is not kept clean and frequent water changes are not done.

Tend to produce a lot of waste, and if their tanks are not kept in top-notched conditions, then your fish will contract several types of diseases and infections.

With timely detection and proper treatment, it is possible to keep your Goldfish healthy and lively for years.

Some common goldfish diseases and infections are:

  • White Spot Disease: This is a prevalent infection in aquarium-raised fish and is usually caused by parasites in the water. Drastic water changes and stress can cause a white spot disease. If you see your Goldfish with white spots, then check for this infection.
  • Floating Problems: This can be the result of overfeeding or feeding low-quality fish food. The dry pellets can sometimes cause your Fancy to bloat. As a result, you may notice them swimming upside down or erratically.
  • Fin Rot: Fin rot is another common fish disease due to stress, poor water quality, fluctuations in temperature, fin nipping, or aggressive tank mates. Check for torn or ragged fins or red streaks on the fins or tails.
  • Fungal Infection: The most common cause of fungal infections in fish is poor water quality. It lowers the immune system and increases the growth of fungus. Fish that are already suffering from other diseases such as parasitic infections, ulcers or open wounds have higher chances of developing fungal infections.
  • Gold Dust Disease This is another fish disease that is commonly caused when fresh fish is added to the tank. Small dust-like grains are formed on the back of the fish. These parasites are relatively small and can be quite hard to detect.

Fun Facts

  1. The colorful and pretty fish was once cultivated and bred for food.
  2. Their ancestors were silver-grey, and they were the most commonly found fish eaten in East Asia.
  3. Fish are the most used animals for tests on visual perception and cognition. The reason being they can perceive the same colors we do.
  4. Humans have three sets of color sensors, while the fish has four. The fourth one helps them to see ultraviolet light.
  5. They are quite helpful in understanding the effects of alcohol on the human brain.
  6. The goldfish-koi hybrids are between the size of a Goldfish and koi. Though they are anatomically intact, they cannot reproduce.

Frequently Asked Questions

Can goldfish live in a bowl?

Fish or any other fish, for that matter, should never be kept in a bowl. It will stunt their growth and make them susceptible to various diseases.

Stunted growth can lead to various other issues. One such problem is that the organs will continue to outgrow the body leading to far more complicated health issues.

How much room do goldfish need for healthy growth?

On average, a fish would need approximately 24 inches of space or surface area in an aquarium for an inch of the length of the fish. If you keep them in a pond, then the surface area should ideally be 48 inches per inch of the fish.

It is not a benchmark for the size of your tank but rather for maintaining good water quality.

Adding a filter to your tank can help when there are more fish in the tank.

What to feed a goldfish fry?

If you want your fry to develop the particular characteristics you want and help them grow quickly, the best food is brine shrimp.

Will goldfish eat other fish?

If you want to know if fish are aggressive, then no, they are not. But if there are smaller fish in the tank with them, there is a good chance that they will eat it.

How to tell if my goldfish is not well?

When a fish is not its best self, the most telltale sign is clamping its fins close to its body. Other symptoms include them sitting at the bottom of the tank, no response to food, erratic and jerky swimming motions, rubbing against the objects in the tank, increased body slime, and loss of color.

How many goldfish per gallon of water?

The ideal rule of thumb is one inch of Goldfish per gallon of water. At least 20 gallons is required for one standard and 10 gallons for a Fancy one.

Do goldfish need tank mates?

They are social and friendly aquatic animals, and they do need companions. Just ensure you keep those that have similar personality and behavioral traits.

How often should I feed my goldfish?

Once or twice every day is the minimum time you need to feed your fish. Fix a time for your feeds for the best results.

Which food is best for my goldfish?

The best fish food is the one that has high vegetable content in pellet form. Bloodworms and brine shrimp are also good choices for treats.

How to clean dirty gravel?

The best way to keep the gravel clean is by investing in a good gravel cleaning siphon. These come relatively cheap, but they do come in convenient in keeping the gravel clean in your tank.

Can I use tap water to top up my tank?

No. Tap water contains chlorine and is harmful both for the fish and the good bacteria found in the filter. Before adding water to your tank setup, you will need to first treat it with a water conditioner for dechlorination.

Can I keep single-tailed and fancy goldfish together in the same tank?

Single-tailed is fast swimmers and can get boisterous at times, while Fancy ones are mostly slow swimmers and may have trouble living together in the same tank as the Single tails ones.

Can goldfish live with guppies?

Yes, Goldfish and guppies can be good tank mates. However, you will need to ensure your fish does not eat the guppies once they grow bigger. Although both have peaceful temperaments, the fish can still eat a guppy out of sheer habit.

Why do goldfish die?

The leading cause of death is poor water conditions such as high ammonia build-up, Nitrate, or pH crash. Ammonia is also another reason for them turning black.

Other causes for untimely death also include Fish TB, a bacteria; overfeeding or poor quality food; parasitic infections; stress from shipping.

What kind of water should I use for my goldfish?

The most readily available and convenient is tap water. However, tap water contains chlorine, so you will need to condition it before using it for your fish.

Water conditioning products are readily available at the pet store, and it helps remove chlorine, ammonia and other heavy metals.

What can I use to accessorize my aquarium?

You can use any kind of decoration for your aquarium, provided they are aquarium safe. Always read the labels; they should say ‘For aquarium use’.

You can use plastic plants, silk plants, driftwood, ceramic ornaments and figurines, etc. You can also use natural plants for your aquarium.

What kind of plants can I keep in my aquarium with my goldfish?

You can put Java moss, java fern, anubias, hornwort, onion plant, hygrophila, bacopa and Cabomba. But please do remember your fish will eat the plants, so make sure you keep the ones that the fish does not particularly like, such as the java plants.

Plants will help improve the tank’s water quality as they will absorb ammonia, and nitrates and add good bacteria to the tank.

Do goldfish sleep?

Yes, Goldfish sleep and take naps during the day. Although watching them sleeping is something not noticeable as they do not have eyelids.

Does my goldfish need light?

Yes, fish do need light. If you are using artificial light, then keep a 12-hour schedule for lights on and 12 hours for lights out. Do not place your fish tank under direct sunlight, as this will heat the tank and promote unwanted algae growth.

Can I pet my goldfish?

You can touch your fish while changing the water or simply feel them. But it is advisable not to do it too often. Touching can remove the slimy protective covering on the fish, which protects it from parasites and other harmful bacteria.

But once in a while, it is recommended to detect any kind of infections that your fish may have.

Does my goldfish have a memory?

According to popular beliefs, a Goldfish has a memory that lasts only 3 seconds. But that is not true at all. In-depth research has confirmed more than once that their memory spans about three to five months.

Koi vs Goldfish – What is the main difference?

The main difference between koi and goldfish is their body shape. Goldfish have a wide range of body shapes, but they are majorly wide. Koi, however, is far more narrow.


Goldfish has been a favorite first pet for many, and they still are very popular as indoor fish. The widespread breeding and developments have resulted in several varieties with unique features.

These distinctive features have made them more attractive and famous to many fish enthusiasts. Depending on your level of expertise, there is a specific goldfish variety for you.

Comets and Shubunkins are great for beginners, while those who have more experience can start with fancy ones like the Orandas, Veiltails, Telescope Eyes, or other varieties.

Whether common or fancy, these have won the hearts of people across the globe for centuries, and they will continue to do so for centuries to come.