Can cory catfish killing other fish?


How do you know if a cory catfish is dying?

Cory catfish having damaged fins isn’t necessarily a sign it’s dying, but it can be. If the fins have small cuts or pieces out of it, the fish has probably been wounded by a sharp object or other fish. Pay attention to dominant tank mates to prevent this from happening again.

Do cory catfish need a large tank?

Cory catfish are considered a hardy breed that remain small in adulthood and do not require a large tank. Cories clean up the aquarium substrate, keeping the bottom of the tank clean and maintaining water quality.

Why is my cory catfish gasping?

When you look at the cheeks of cory catfish, it should look like it’s chewing and its gills should always be moving. If the gills move abnormally fast, though, this can be a cause of bad water parameters. If your fish is gasping at the surface, your water most likely has too little dissolved oxygen in it.

Why are my cory catfish not eating pellets?

If your fish are wild-caught, there’s a chance they don’t know that pellets are food. You can try feeding them live foods such as bloodworms to see if they react to that. Cory catfish not eating can be caused by various reasons or diseases, but if nothing’s done this will ultimately lead to starvation.

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Why is my fish gasping?

However, the cause of that gasping could be due to several factors. The warmer the water gets, the less oxygen it holds. Check the temperature, as it should be about 24-28°C/75-82°F for a tropical freshwater tank. In hot weather the tank may be overheating naturally, so try to cool it and boost aeration.

Why is my Goldfish gasping?

Various diseases that affect the gills can also cause gasping. Look for signs of infection such as spots, clamped fins, secondary infections such as fungus or bacterial diseases. Many of these attack gill tissue, which either damages those tissues or causes the fish to produce extra mucus that could reduce the amount of oxygen fish can extract.

Why is my fish gasping for oxygen?

Both ammonia and nitrite affect gills and can cause gasping, so test the water at the first sign of trouble. When ammonia is present fish produce extra mucus, which reduces the surface area of the gills, making them less effective at extracting oxygen.

What happens if you put carbon dioxide in fish tank?

Carbon dioxide is naturally present in the water your fish live in anyway – it is a result of the respiration process. It can also be used as a method to euthanize fish because the addition of carbon dioxide to the water decreases oxygen levels, thus causing your fish to suffocate.

What does it mean when a fish is gasping?

Gasping fish is often an early warning that something is wrong, so if the tank is very warm and heater light on this could be to blame and will need replacement. If this is the case, temperature will be very high — usually well over 30°C/86°F.

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Can too much CO2 kill fish?

Too much CO2 in an aquarium can be toxic (and thus deadly) for fish. Therefore, it’s imperative that the tank be properly lit with an aquarium light.

What happens if you don’t have a CO2 tank?

For instance in a tank without a good CO2 system, the aquarium plants may look pale or sickly, or the waters murky. People also find it hard to believe they need CO2 if they have a lot of fish: after all fish filter out CO2 when they breath.

Do aquarium fish need CO2?

If you have living plants in your aquarium, you’ll probably know that they need CO2 to help them thrive. That’s because around 40% of a plant is made up of carbon. However, if CO2 levels in the water are too high, that will be detrimental for your fish.

Should you add carbon dioxide to your aquarium?

Some extra CO2 in your aquarium can take your plants from average to extraordinary. But before you start adding carbon dioxide to your tank, make sure you know its pros and cons.

Why do I need a CO2 regulator in my Aquarium?

Too much CO2 in the water increases toxicity and affects the pH balance. Unfortunately, unless you are highly skilled in detecting or noticing the level of carbon dioxide, what you will see is sickly or dead fish. A CO2 regulator helps moderate the level of CO2 thus minimizing the negative effects.

How do you get rid of CO2 intoxication in fish?

You can also add an air stone and agitate the water surface, but a super-quick water change is more effective. The most common time for fish to experience CO2 intoxication is at night when the plants use oxygen and produce CO2, further adding to the toxicity within the tank.

What happens if you put CO2 in a fish tank?

The more CO2 that’s in the water, the less oxygen will be available in the fish tank. An overdose of CO2 occurs when there’s more carbon dioxide in the water than the plants are capable of absorbing, and oxygen begins to deplete. Fish will start to gasp at the surface, and if left go too long, they will die.

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Why are my fish biting the air around the water?

Another reason why they may be doing this is because of chemicals or medications that have been added to the water. They may not be used to it, and because they have some new it is causing them to stress. The air would be a coping mechanism to let them breathe fresh oxygen instead of what may be in the chemicals or medicine.

Should you add CO2 to a low-light aquarium?

The amount of carbon dioxide given off naturally by the fish and through surface agitation is usually enough. That being said, it’s still okay to add a little CO2 to your low-light aquarium if you want to boost the health and growth of the plants in the tank.

Do I need a CO2 injector for my Aquarium?

The primary type of aquarium that would benefit from a CO2 injector or an automatic CO2 system aquarium setup would be a planted aquarium. Reef tanks, marine tanks, and fish-only tanks rarely – if ever – need additional CO2 beyond what naturally occurs there.

Is CO2 bad for aquarium fish?

The presence of CO2 in an aquarium is required for the health of all aquatic life, including fish. It helps improve water quality and keeps algae growth to a minimum. This is all due in part to its positive effects on the plants in the tank. Healthy plants equal healthy fish, especially for those that feed on them.

How does dissolved oxygen affect fish?

However, that toxicity threshold can change drastically, depending on the levels of dissolved oxygen in the water. In tanks where the levels of oxygen are low, the fish are more sensitive to the toxic effects of CO2. Conversely, in water with high levels of dissolved oxygen, the safe threshold of CO2 is increased.