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Old 01-29-2008, 09:28 PM   #1
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Strange Cory Behavior

I've got a 10G with 5 small corys in there. Usually, they're pretty active, swimming everywhere and playing in the bubbles from the airstone. But sometimes, I'll catch one or two of them looking like they're dead, laying on their side on a leaf or almost belly up at the top of the tank. When I gently poke them to see if they're dead, they scurry away.

Why do they do this? Is this normal, or is it something I should worry about?
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Old 01-29-2008, 10:19 PM   #2
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Perfectly normal cory behavior! Mine freak me out too by playing dead on an anubias leaf.
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Old 02-09-2008, 09:30 AM   #3
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After I noticed the odd behavior, he went largely immobile and settled down under/behind a rock above. I checked on him a couple of times in the meantime and he was still breathing, but wasn't making any improvement. I checked him again this morning and he seems paralyzed caudally behind the pectoral fins. His back was locked into a curl and he had no pitch/roll control when I prodded him into open water. I treated him to an ice bath. The other cory and neons in the tank are fine as are the 20 to 70 pond snails.

I'm thinking he may have ingested some stone fragments or something (small snail) and was impacted. I'll get the remaining cory some more schoolmates this weekend at the LFS and see howthat goes.

Oh, his caudal region had atrophied a good bit, he looked more tadpole-like than fishlike from above over the last couple of days. Catabolism? and maybe amplified by a swollen abdomen. . .

odd. wish I had euthanized him earlier, but held out hope that something would literally pass and he'd get back to normal.
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Old 02-09-2008, 09:31 AM   #4
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opps should have posted that to Cory dancing thread I started earlier.
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