Cory Catfish 101 – Types, Diet, Lifespan & Tankmates (FAQ)

You may ask yourself, “Do I need a Cory Catfish in my tank?” The answer to that question is a resounding yes! Not only does Cory fish add an element of beauty and serenity to your tank, but they also play an essential role in its overall health.

Cory cats are a type of fish that is popular in the aquarium hobby. They can be found in many colors and are relatively easy to care for.

By reading this comprehensive guide, you’ll learn everything you need to know about keeping Cory Corydoras fish healthy and happy in your aquarium.

From the different types of Cory Catfish available to their dietary needs and lifespan, we’ve got you covered. We’ll also give you tips on the best peaceful tank mates for these fish.

Are Cory Catfish Good Pets?

Yes, Cory makes excellent pets. They are small, easy to care for, and very friendly. They are also very active and playful, making them a great addition to the aquarium. In addition, they don’t require a large tank and can live in small tanks with other fish.

What Types of Cory Catfish Are There?

There are several different types of Catfish. Some of the most popular ones include corydoras paleatus albino, bronze cory, peppered Cory, panda cory, pygmy cory tank mates, and other fish species.

Cory Catfish Types (List)

Albino Cory Catfish

Albino Cory is a type of corydoras aeneus catfish. They get their name from their lack of pigment, which causes their scales and skin to be white or pale.

Albino Corydoras Cats are a popular choice for fish tanks because they are small, peaceful, and easy to care for. They can be kept in a community tank with other smaller fish and typically do well in cold and warm water temperatures.

Black Cory Catfish

The Black Cory fish is a small, bottom feeding fish native to North America. It is an ideal fish for beginners, as it is hardy and easy to care for.

The Black Cory will scavenge the bottom of the tank for food, so it is vital to keep the tank clean and free of debris.

It can be kept in a community tank with other adult fish and will get along well with most other aquarium fish.

Panda Cory Catfish

The Panda Cory fish is one of the most popular fish for a freshwater community tank. They are small and peaceful and make a great addition to any tank.

The Panda Cory fish get their name from the black spots that cover its white body. These spots give them a corydoras panda-like appearance. They are a member of the Corydalis family and can be found in South America.

Panda Cory Cats does well in cold and warm water and can tolerate various water conditions.

They prefer soft, acidic water but can do well in harder water if it is not too alkaline. They will eat most types of food but prefer live or frozen food over pellets or flakes.

Green Cory Catfish

The green corydoras aeneus is a popular freshwater fish native to South America. It is a schooling fish and can be found in rivers, streams, ponds, and lakes.

This Catfish usually grows to a length of around 2-3 inches, and it has a greenish coloration with a light yellow stripe down the middle of its body.

It is an omnivorous species of fish that feed on plants and animals and is considered a beneficial addition to any aquarium community.

Green cory cats are peaceful fish that do not threaten other tank inhabitants and make excellent choices for both beginners and experienced aquarists alike.

Emerald Cory Catfish

The Emerald Catfish (Corydoras Concorsi) is a small, bottom-feeding fish native to South America. It has a unique emerald-green coloration with black stripes on its fins.

This fish is an excellent choice for a community tank, as it is peaceful, easy to care for, and will not bother other fish. Emerald Cory fish also do well in tanks with live or fake plants and need plenty of hiding places.

Emerald Cory Cats prefer to be kept in a school of at least six, and they should be fed a variety of live, frozen, and sinking foods. They will also enjoy vegetables such as cucumbers or zucchini blanched in boiling water.

Overall, the Emerald Cory Catfish is an excellent choice for anyone looking for an easy-to-care-for healthy fish that will brighten up any community tank.

Pygmy Cory Catfish

Pygmy Catfish (Corydoras catfish pygmaeus) is a small, schooling fish that can make a great addition to any community tank.

They are bottom dwellers that scavenge for food among the gravel and plants, so they help keep the tank clean.

Pygmy Corydoras catfish grow to only about 2 inches in length and are best suited for tanks with smaller fish.

It can be shy fish, but it will eventually become more accustomed to its surroundings and start to come out more often.

Regarding water conditions, pygmy Catfish prefer soft water with a pH of 6-7 and a temperature range of 68-76 degrees Fahrenheit.

Julii Cory Catfish

Corydoras julii Catfish is an excellent choice for a beginner fishkeeper. They are hardy and easy to care for and come in a wide range of fun colors.

Julii Catfish prefer colder water temperatures, so you’ll need to provide a tank heater if you want to keep them in your home aquarium. They do best when kept in schools of at least six fish, and they will eat most types of food pellets or flakes.

How Often Do Cory Catfish Lay Eggs?

Some fish will only lay eggs once a year, while other fish like Cory fish, may lay eggs every 20-30 days.

The time of year, water temperature, and availability of food all play a role in determining how often a particular fish will lay eggs.

They are bottom dwellers who like to live in heavily vegetated areas where they can find plenty of covers.

They are timid fish that do not like to be disturbed, so they usually lay their eggs in quiet, protected areas away from the primary current.

What Are the Lifespan and Size of Cory Catfish? (Cory Catfish Lifespan)

Cory cats typically live between 3 and 5 years, with some living up to 10 years in captivity. Their size will depend on the species, but most will reach 2-3 inches in length.

How Many Cory Catfish Need to Be Kept Together?

Cory Catfish should be kept in groups of at least 6-8 fish. This helps to keep the fish feeling secure and comfortable, as they will have plenty of company.

Keeping a larger group also helps to spread out their territorial behavior and encourages them to feel more at home in their environment.

What Do Cory Catfish Eat? (Cory Catfish Food)

Cory Catfish eat live blackworms, frozen bloodworms, and Hikari Vibra Bites. They are omnivorous and scavenge the bottom of the aquarium for food.

Blackworms are a great source of nutrition for Cory Cat because they are high in protein and contain various vitamins and minerals.

Bloodworms are also high in protein and make a great addition to the fish diet. And Hikari Vibra Bites are sinking pellets formulated for all types of catfish.

It is packed with premium ingredients, including shrimp, fish, squid, and krill, to help keep your Catfish healthy and vibrant.

Do Cory Catfish Eat Algae?

No, Most Cory Catfish do not eat algae. Algae is not a natural habitat for their diet.

Cory fish are bottom feeders and mainly eat small insects, invertebrates, and plant debris. They will also scavenge for food if necessary, but they are not known to eat algae.

However, they help keep the breeding tank clean by consuming uneaten food and other debris accumulating on the substrate.

Can Cory Catfish Eat Betta Food?

The Cory catfish is an omnivorous fish that will eat just about anything. It’s been known for years now, even though it didn’t happen until recently with the introduction of betta food!

You might wonder why a carnivore would want to chow down on vegetarian offerings like pellets or flakes.

Well, there are two reasons: First, they need meat in their diet because being herbivores doesn’t mean you can exist solely on plants.

Secondly, this type of cuisine has become increasingly popular as more people appreciate living creatures rather than focusing only on how many units per day can quickly get bored without stimulation from other fish.

In conclusion, Most Cory Catfish can eat betta food. Feeding them a balanced diet that contains both plants and protein is essential to keep them healthy and strong. Feeding various foods will also help prevent boredom and keep them active in their aquarium.

Do Cory Catfish Eat Snails?

Does Cory Catfish Eat Snails? This is a tricky question because it would depend on the size of the snail and the size of the Cory cat.

Generally speaking, small snails would be eaten by small fish, while larger fish would eat more giant snails. As for Cory fish specifically, they tend to eat smaller snails that are less than 1/2 inch in diameter.

So if you have a snail population in your aquarium that consists primarily of more giant snails, then your Cory fish may not touch them. However, if you have a population of smaller snails, then there’s a good chance your Catfish will eat them.

Do Cory Catfish Eat Shrimp?

Will Cory catfish eat shrimp? Cory eats various things in the wild, including crustaceans (like shrimp), insect larvae, and zooplankton.

In an aquarium setting, they can be fed the most commercially available fish food, including shrimp pellets, bottom feeder tablets, flakes, freeze-dried foods, live or frozen foods, bloodworms, brine filter shrimp, and other baby catfish. So, generally speaking, yes, they will eat shrimp.

However, it’s always best to check with your specific retailer or fish supplier to see what they recommend for temperament cory catfish.

What Fish Can Live with Cory Catfish? (Cory Catfish Tank Mates)

Corydoras catfish are peaceful, friendly fish that make good tank mates for many other fish species.

Some good Cory tank mates include small tetras, danios, livebearers, peaceful barbs and rainbows, and some kinds of invertebrates (brine shrimp, snails). They also do well with other fish in a community aquarium.

Just make sure to research the fish you are thinking of adding to the tank and ensure they are compatible in size, temperament, and water parameters.

By researching compatibility before adding fish, you can ensure that your new Cory Catfish and their tank mates are happy and vibrant.

Do Cory Catfish Clean the Tank?

Cory cats are scavengers, meaning they can help clean the tank by eating leftover food and other debris. They will also sift through the soft sand substrate and help remove waste from the gravel.

However, it is essential to note that Cory armored catfish are not professional cleaners and should not be relied on as your primary source of tank maintenance.

Regular water changes, vacuuming the substrate, and removing debris from the water are still necessary to keep your tank clean and healthy.

Why Do Cory Catfish Swim to the Top?

Cory catfish swim to the top of the tank because they can absorb oxygen from the air. This allows them to survive in tanks with low levels of dissolved oxygen.

These fish are one of the few fish that can breathe air. This is because they have a unique organ called a labyrinth that allows them to take in oxygen from the water’s surface.

This is why you often see cory catfish swimming at the tank’s surface.

What Do Cory Catfish Do for Your Tank?

Cory catfish provide several benefits for your tank.

  • First, they scavenge and eat leftover food or debris on the bottom of the tank, helping keep the water clean.
  • Second, they help control the algae population by eating any algae they can find. Third, they are active and playful fish that add interest and movement to the tank.

Finally, cory fish are social fish and do best when kept in groups of 3 or more.

How to Fix Swim Bladder in Cory Catfish?

Many Cory Catfish owners are unsure how to fix swim bladders in Corys fish.

Swim Bladder Disease (SBD) is a common ailment among Cory fish species and can be fatal if left untreated. 

Watch this video and learn How to Fix Swim Bladder in Cory fish; this simple, step-by-step guide will show you how to treat SBD quickly and effectively to prevent kill cory catfish.

How Big Do Cory Catfish Get? (Cory Catfish Size)

Cory Catfish are small fish, usually growing to be between 2-4 inches long. Though they can get larger in some cases, the average size of a Corydoras Catfish is usually around 2-3 inches.

If you want to keep more than one Cory together, checking the size of each fish before adding them to the same tank is vital.

These small fish can be kept in tanks as small as 10 gallons, though larger tanks are always better for providing room for swimming and hiding.

How Many Cory Catfish in a 10-Gallon Tank?

You can keep 5-6 fish in a 10-gallon tank. They like to swim in schools and help clean up any leftover food or debris on the bottom of the tank.

It is important to remember that Cory Catfish do best when kept in groups of 3 or more, so if your tank is smaller than 10 gallons, you should only keep 1-2 fish.

It is also essential to do regular water changes with a 10-gallon tank, as small tanks can become polluted quickly.

Following a few simple guidelines ensures that your fish and their tank mates are both happy and healthy.

So keep an eye on water parameters, ensure plenty of space for swimming, and don’t forget to add a few plants and decorations for hiding spots.

With these tips, you can have an enjoyable and successful Cory Corydoras Catfish tank!

Cory Catfish Price

Cory Catfish are usually quite affordable and can be purchased from most pet stores for around $3-$10 per fish. Online retailers may charge a bit more, but Corys fish is one of the cheaper fish to purchase.

The price can also vary depending on the tank size and type of Cory Catfish you are looking for.

It is important to remember that buying fish online may not be what they seem. Always check reviews and research the seller before making a purchase.

Cory Catfish Temperature:

The Cory Catfish is a tropical fish and should be kept at a temperature of about 72-82 degrees Fahrenheit.

Lower temperatures will slow their metabolism and can cause them to become ill. Higher temperatures can lead to stress and even death.

It is crucial to ensure the water temperature remains stable, as sudden changes can be fatal.

Another vital thing to remember is that Corydoras fish are sensitive to water hardness, so make sure you use an aquarium test kit to check the pH and hardness of your tank water before adding any fish.

Cory Catfish Diseases

Cory Catfish diseases can vary depending on the species of Cory Catfish you have. However, some general information about Cory Catfish diseases includes fin rot, bacterial gill disease, and red blotch disease.

Fin rot is a common disease among Catfish species and is caused by a bacterium called Aeromonas. The bacteria typically enter the body through a wound, such as a bite or scratch from another fish. 

Once the bacteria enters the body, it begins to attack the fins and cause them to rot away. 

Bacterial gill disease is also common among Cory Cats and is caused by many different bacteria, including Pseudomonas and Flavobacterium. Symptoms of bacterial

Commonly Asked Questions about Cory Catfish Types & Care (FAQ)

Are Cory Catfish Schooling Fish?

Yes, Cory Catfish are schooling fish and do best when kept in groups of 3 or more. Keeping them in small groups helps to reduce stress and keep them active.

Can Cory Catfish Live with Goldfish?

No, Corys should not be kept with goldfish as they have different environmental needs. For example, goldfish require cold water, while breed Cory catfish need warm water. Additionally, goldfish produce a lot of waste which could lead to high levels of ammonia in the tank, affecting the health of your Cory.

Are Cory Catfish Nocturnal?

No, Cory fish are not strictly nocturnal, but they will be more active at night. During the day, they may hide in caves or under aquarium plants, but in the evening, they will come out to feed and explore.

How to Save a Dying Cory Catfish?

If your Cory fish is dying, you should first identify the cause of the problem. Some common causes are dying of Catfish, including poor water quality, lack of oxygen, and emerald Cory catfish temperature or pH fluctuations. Once you have identified the cause, could you take steps to address it immediately?

Can Cory Catfish Live with Cichlids?

Yes, Cory Catfish can live peacefully with some cory species of cichlids. However, it is vital to research the individual cichlid fish species before adding them to the tank. Some cichlids are more aggressive fish than others and may not get along with other fish in the tank.

Can Cory Catfish and Betta Live Together?

Can Cory catfish live with bettas? Yes, Cory Catfish and Betta can live together in the same tank as long as there is plenty of space for them to swim. The tank should be at least 10 gallons, and the water should be kept at 72-82 degrees Fahrenheit.

How Many Cory Catfish in a 20-Gallon Tank?

You can keep up to 10 Corys in a 20 gallon tank as long as it is appropriately cycled and the water temperature and pH levels remain stable. However, it is essential to note that the tank should be heavily planted as Cory fish will dig and hide in the substrate.

Are Cory Catfish Algae Eaters?

Corys are not true algae wafers eaters and should not be relied upon to clean the tank. While they may nibble at soft algae, their main diet should consist of sinking pellets and blanched vegetables.

Why Is My Cory Catfish Swimming Crazy?

If your fish swim erratically, it could signify stress or illness. Check the water parameters to ensure they are within the recommended range, and observe your fish for signs of illness such as color changes, frayed fins, or lethargy.

Will Different Cory Catfish School Together?

Yes, different species of Cory fish can school together without any issues. However, it is essential to remember that keeping different species of Cory fishes in the same tank can increase the risk of disease transmission, so it is best to quarantine new fish before adding them to your tank.

How Many Peppered Cory Catfish Should Be Kept Together?

Keeping at least 3 Peppered Cory Catfish together is recommended for them to feel safe and secure. Keeping multiple Peppered Cory fish will also encourage them to be more active and friendly, which will help to improve their overall health.

Can I Have 1 Cory Catfish?

Can cory catfish live alone? While a single Cory fish can survive in a tank, it is not recommended. Cory Catfish are schooling fish and need the company of other Corys to feel secure.

How Long Do Peppered Cory Catfish Live?

With proper care, peppered Cory Catfish can live up to 8 years in captivity. They are very hardy fish and can thrive in various water parameters. To ensure a long and healthy life for your Peppered Cory, provide them with a clean, well-maintained tank with good water quality and plenty of hiding spots.

Are Albino Cory Catfish Blind?

No, albino animals are not blind. They have excellent eyesight and can detect movement from far away. However, they have a reduced ability to see in low-light conditions and may become more active during the day when there is more light.

Why Does My Cory Catfish Swim to the Surface?

If your Cory Catfish is swimming to the surface, it could be a sign of inadequate oxygen levels or an issue with the water quality.


Cory Catfish is a popular freshwater aquarium fish for a good reason – they’re easy to care for, fascinating to watch, and relatively long-lived. While many types of Corys available to choose from, most do well in similar environments and with the same tank mates. If you’re considering adding some Corys to your aquarium, do your research to provide them with the best possible cory catfish care.

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About Me

I am the founder of, a devoted wife and mother, and an avid fish enthusiast. My aim is to assist fellow fish lovers worldwide in understanding how to properly care for and breed their pet fish.

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