Top 3 Reasons Why The Cory Catfish Laying on Side (2024)

The Cory Catfish is a popular freshwater aquarium fish. It is known for its friendly disposition and playful nature. However, sometimes this fish can be seen lying on its side at the bottom of the tank. This behaviour can be concerning for aquarium owners, but few possible explanations are. Don’t wait anymore and explore the reasons why Cory Catfish laying on side now!

Why Is The Cory Catfish Laying On Side?

There are many reasons why a cory catfish might lay on its side. It could be a sign of illness, or the fish could be stressed. Alternatively, the fish could simply be resting. If you notice your cory catfish lying on its side, it is important to observe the fish closely to determine whether there is cause for concern. Then, let’s check out some possible reasons for your fish’s behaviour in the sections below!

Top 3 Reasons Why The Cory Catfish Laying on Side (1)

Cory Catfish Are Probably Just Resting

As for the catfish lying down like this, this is normal. When the cory catfish want to take a nap, they will typically lie down like this.

As for how they sleep, these fish are also a little bit unusual. It’s technically true that they’re diurnal, but they keep busy for long periods of time. Instead of napping, they just rest when they feel the need for it.

A cory catfish will take a little nap when it feels like it needs to rest. There is often nothing better than watching a cory catfish nap for five minutes at a time. You might find a fish leaning against a rock or lying on the sand in your tank. Your fish will sleep whenever they want during the day or night.

Diurnal fish tend to be more active during the day than at night. Unlike most fish, they don’t tend to cycle around the sun throughout the day.

Swimming Bladder Problems

Swim bladder issues might cause long periods of lying on its side in cory catfish. Observe whether the fish is usually lying on its side most of the time because that may indicate that it is not swimming normally.

Check if you can get the fish to move around by tapping the glass. Note how the fish swims and how it reacts to your tapping.

How well does the fish control its movements, or is it swimming erratically? People describe fish that appear drunk to have swim bladder issues.

Swimming in circles is not unusual for fish. Other fish may swim upside down or sideways. Some fish can’t normally eat due to this problem, making it hard for them to move around.

When a fish appears not to be swimming normally, it is likely having trouble with its swim bladder. A swim bladder problem can be exacerbated by overfeeding and bad water quality.

Stress And overcrowding

Top 3 Reasons Why The Cory Catfish Laying on Side (2)

The overcrowding of the fish tank is another thing to consider. Fish can sometimes behave strangely when put in stressful conditions.

When there is something wrong in the tank, a fish might lay on its side more than usual. Keeping the water parameters in the right range might be harder in blocked fish tanks. Tanks can quickly become filthy when they’re overcrowded. As the ammonia, nitrate, and nitrite levels rise, the fish might start suffering.

In addition to stress, a wide variety of other factors can cause cory catfish to behave oddly. Cory catfish, for example, maybe stressed by not being kept in a large enough group.

In general, cory catfish should be kept in groups of six or more fish each. They are schooling fish which are not well suited to being held in a tank by themselves.

The only way these fish will feel comfortable in a fish tank will be to keep just two or three of them. If your fish are not happy in the tank, some may begin looking lethargic.

Therefore, it’s important that you make the fish feel comfortable when handling them. Make sure they are kept in groups of at least six and in a fish tank that is large enough that they can thrive.

Don’t forget to choose tank mates who are appropriate for these fish. Fish that are aggressive can take advantage of cory catfish’s calm nature.

A hostile tank mate can easily lead to a stressed cory catfish. It is crucial to research the tank mates whenever building a community tank.

Treatment To Cory Catfish Laying On Side

Because of a wide range of reasons, treatment differs. Damage to the swim bladder in some fish can be irreversible. You might be able to treat the fish and reverse the damage in other circ*mstances.

Medication such as Swimbladder Treatment Plus can be given to the fish to treat the swim bladder problem. As long as you follow the instructions that came with your medication, it should help clear things up. Make sure to take care of any problems in the fish tank as well. Monitor the water parameters and make every effort to maintain the tank clean by changing the water on a regular basis.

Make every effort to prevent overfeeding the fish when feeding it. Cory catfish should be fed twice a day, and each time you should feed them as much as they can consume in three minutes. The boiled pea is a simple and effective way to make the catfish defecate.

Because medications can harm other fish and diseases that impair swim bladders seldom transmit between fish, you may choose to treat him in a separate aquarium.

Video: Behavior of Albino Cory Catfish Tanks

FAQs

How do I know if my Cory Catfish is dying?

If your cory catfish exhibits the following symptoms of poor health, it is dying.
– Weakness and sluggishness.
– Swimming slowly or not at all.
– Inverted swimming.
– Refusal to consume food.
– Gill discolouration.
– On the surface, gasping and having difficulty breathing.
– Cloudy and protruding eyes.
– White blemishes on the body

Why is my fish laying upside down on the bottom of the tank?

Suppose an aquarium fish flops over on its back or lists to one side. In that case, it most likely has swim bladder disease, a potentially fatal illness caused by parasites, overfeeding, or excessive nitrate levels in the water.

Do Corydoras sleep on their side?

Yes, they will sleep in odd positions, such as on their side or in strange places.

In Conclusion

The most likely reason for a Cory Catfish lying on its side is sick. Other possible explanations include being stressed or having swim bladder disease. When you observe that your fish is lying on its side, you must first identify the cause. If the situation worsens, I suggest you take it to a vet for a check-up.

5/5 - (1 vote)

Top 3 Reasons Why The Cory Catfish Laying on Side (4)

Annette M. Chaney

Annette M. Chaney is an experienced marine biologist with over 20 years of experience as an aquarist and fishkeeper. She started her first aquarium at a young age, filling it with frogs and goldfish obtained from the ten-cent pet store.

Annette grew up caring for and breeding African Cichlids, which led to a hobby in high school that doubled as a profitable means. Attending Reed College gave her time to solidify herself as an accomplished aquarium caretaker with an eye for sales. After that, from 2009 – 2013, she studied at Roger Williams University – one of the most prestigious universities for Aquaculture and Aquarium in USA. She is the founder of AquariumCircle since 2010.

Top 3 Reasons Why The Cory Catfish Laying on Side (2024)

FAQs

Why is my cory catfish swimming on its side? ›

If an aquarium fish is listing to one side or flops over on its back, it often means it has swim bladder disease, a potentially life-threatening condition usually brought on by parasites, overfeeding or high nitrate levels in the water.

Can you keep 3 Cory catfish? ›

For dwarf species, a 10-gallon aquarium may be suitable, but we recommend 20 gallons or more for most other varieties. As a relatively small fish, they crave safety in numbers, so a group of six corydoras or more (all of the same species) is highly suggested.

Do Cory catfish get along? ›

Corydoras Behavior/Compatibility

Corydoras, Brochis and Aspidoras species are shoaling fish, meaning they like to hang out together. Different species can be mixed, and they will often group together. For best results, they should be purchased in groups of 5 or more.

Why is my Cory fish sitting on the bottom of the tank? ›

It's sitting still because it's eating. They're bottom feeders. They're scavengers. They eat algae because of how they eat, scraps.

How do you fix a swim bladder in Cory? ›

How can I help my fish with Swimbladder? Increase temperature to 80f, add 1 tablespoon of aquarium salt/gallon of water and daily 50% water changes. Also add 1 teaspoon Epson salt/gallon.

How do you fix a swim bladder? ›

Treatment of swim bladder disease in fish involves water maintenance, feeding changes, and possible antibiotics. Let the fish fast: If an enlarged stomach or intestine is thought to be the cause of a swim bladder disease, the first course of action is to not feed the fish for three days.

Is it okay to have 1 cory catfish? ›

Cory Catfish are very social creatures, especially with others of their kind. While Cory Cats can survive alone, they seem much happier in a group of two or more. Two Cory Cats of the same type will often stay close to one another as they move throughout the tank to feed. This is especially true when they rest.

Can I get 4 corydoras? ›

Corydoras are peaceful. Most corydoras like to live in groups, and they should be kept in a school of four or six.

How do I know if my corydoras are happy? ›

Look for these five signs:
  1. Your Fish Are Active and Like to Explore. ...
  2. Your Fish Get Along. ...
  3. Your Fish Have Enough Room to Move Freely. ...
  4. Your Fish Act Interested When You Feed Them. ...
  5. They Don't Have Signs of Illness.

What is the prettiest Corydora? ›

The Sterbai Cory is a beautiful Cory that is readily available in most aquarium stores. The Sterbai Cory is a great fish for every aquarium. Originating from the Guapore River in South America.

Will cory catfish eat their eggs? ›

After the cory catfish have spawned, I remove the adults from the aquarium. There is no post-spawning care of the eggs by the adults, so there is no reason to leave them in the fish aquarium. They're certainly capable of eating their own eggs or wrigglers.

Why is my fish laying on its side? ›

When a fish is unable to control its depth, or starts swimming sideways, upside side down, or head or tail down, it may have "swim bladder disease." A fish with swim bladder disease can be a troubling sight to see, but it can be treated.

Why is my fish laying on its side but still breathing? ›

When you see your fish belly-up, don't assume it's dead; if it's still breathing, it probably has swim bladder disorder. Here are symptoms to look for: The fish keeps floating to the top, upside-down. The fish keeps sinking to the bottom of the tank.

Why is my fish laying down? ›

If your freshwater fish is lying at the bottom of the tank, it could be a sign of stress, poor water quality, or illness. It's important to observe any additional symptoms such as labored breathing, lack of appetite, or erratic swimming to determine the cause.

What causes swim bladder in catfish? ›

Improper diet is another major factor that causes swim bladder disorders. Feeding the wrong foods or too much food can lead to gut distension and digestive tract blockages that obstruct the pneumatic duct (a structure that connects the swim bladder to the digestive tract in some fish), leading to swim bladder disease.

What causes swim bladder disease? ›

This can be due to overeating, overconsumption, low water temperatures, bacterial infections, parasites, or other impaired organs affecting the bladder. In these particular cases, the fish can end up with a distended belly, curved back, impaired swimming, or even death leaving them floating on top of the water.

Why is my catfish not swimming properly? ›

If your fish is not swimming, lying on the bottom, and not eating, it could be an indication of a health issue. Here are some steps you can take to help your fish: 1. Check the water parameters: Test the water quality parameters such as temperature, pH, ammonia, nitrite, and nitrate levels using a reliable test kit.

Top Articles
Latest Posts
Article information

Author: Lilliana Bartoletti

Last Updated:

Views: 6051

Rating: 4.2 / 5 (53 voted)

Reviews: 92% of readers found this page helpful

Author information

Name: Lilliana Bartoletti

Birthday: 1999-11-18

Address: 58866 Tricia Spurs, North Melvinberg, HI 91346-3774

Phone: +50616620367928

Job: Real-Estate Liaison

Hobby: Graffiti, Astronomy, Handball, Magic, Origami, Fashion, Foreign language learning

Introduction: My name is Lilliana Bartoletti, I am a adventurous, pleasant, shiny, beautiful, handsome, zealous, tasty person who loves writing and wants to share my knowledge and understanding with you.