Cory Cat keeps jumping, freaking out - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 4 Old 09-24-2009, 11:31 AM Thread Starter
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rynthae's Avatar
Cory Cat keeps jumping, freaking out

Our cory cat, Arc, keeps running up and down the walls vertically, and occassionally jumps. Lately he doesn't seem to sit on the bottom very much, and seems very stressed. :( What do you think is wrong, and what can I do? He doesn't show any symptoms of being sick..


My tanks:

15 gal: six female bettas (Tabby, Galatea, Sophia, Noel, Irene, Teresa), three blue long-fin danios, two opalescent danios, one cory cat (Arc), two clown plecos, one pineapple swordtail (Ren)

20 gal: one bristlenose pleco (Leon), five zebra danios, two orange/black swordtails (Amber and Lucas), one fancy goldfish (Cali), two chinese algae eaters (the Twins)

Miscellaneous: Five baby orange/black swordtails
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post #2 of 4 Old 09-24-2009, 12:03 PM
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Cories are a shoaling fish and need to be kept in a group (3 is the absolute minimum) in order to feel comfortable and thrive. It's quite possible the stress of being alone is finally getting to him.
How long has your tank been set up and what are your water parameters??
Is this tank stocked as it shows in your signature line? If so, IMHO your tank is heavily overstocked. This may also be what is contributing to your cory's behavior.

If you don't stand up for something you'll fall for anything...

Last edited by aunt kymmie; 09-24-2009 at 12:06 PM.
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post #3 of 4 Old 09-24-2009, 01:00 PM
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I concur fully with kymmie. Corys when stressed by something will very often behave as you describe. For instance, when first acquired, or if moved into a different tank, this is common behaviour for a day or sometimes several days, which is sipmly the fish's way of saying "I'm not happy." Allowed to continue, stress can cause health problems and bring on disease and parasites that the fish would otherwise be able to fight off or avoid.


Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #4 of 4 Old 09-26-2009, 07:19 AM
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I agree with all of the above. Would aslo submit that cory's don't appreciate warmer temperatures that Betta's enjoy.

The most important medication in your fish medicine cabinet is.. Clean water.
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