Cory Catfish swim really fast to the top normal?

yld

AC Members
Mar 30, 2011
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Sunshine State
I have a Emerald Cory and I notice sometimes he just swim really fast to the top and go straight back down. Is that normal? Sometimes he look like he is dead since he doesn't move for a long time an then he suddenly does that. Very weird fish.
 
totally normal behavior for corys from what I've seen in my fish as well as research, I find it rather endearing.
 
I thought it was them going to get air??? Maybe I'm wrong.
 
Definitely normal behavior. I find the emeralds and the albinos are kinda lazy. My sterbai are all over the place!!
 
I thought it was them going to get air??? Maybe I'm wrong.

For other fish yes, but corys continue the behavior in well oxygenated water (if my tank is low o2 then there is a secret society of oxygen sucking gremlins hiding in the silicone).
 
Thanks for the response. Is my first time with a Cory so I thought something was wrong. But is normal then huh! What a crazy fish lol it's funny
 
wait....A <---- (singular) cory? corys do like to be kept in a group of +6, (rarely a problem as they are fastidious little fish).
 
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