Strange Cory Behavior

Analog Saint

AC Members
Aug 25, 2004
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Washington, DC
For some strange reason, one cory just hovers about half an inch below the waterline- usually in the corner of the tank. Not really sure what his deal is, or if I should be worried. He's not thin, no signs of gill irritation, nothing unusual... Just your average panda cory. Anyone know what this could be about? He's done this for about four or five days now, and I'm not sure why.

I've had this bunch of cories since october, in a tank I've had cycled and
established for months prior. Nitrogen is below detectable levels in all my tanks, and I do large bi-weekly water changes. Their diet consists of hikari sinkers and the odd algae disc.

enlightenment appreciated.
 
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