Albino Cory Not Moving Much

[alysonpeaches]

At the beginning of the week I added my 4 albino corys. 3 of them are very busily sifting the gravel and occasionally nipping up to the top of the tank. One of them isnt moving very much at all. He does move, but isnt on the go all the time like the others. His appearance seems fairly normal, if anything he might be a little paler than the others. I tested my water and its all OK. I tried adding the venturi attachment to my filter to see if extra aeration would help but it didnt make any difference. I could add an airstone and an airpump if necessary though.

Any ideas??

 

[corydoras1]

Not moving as much as the others doesn't necessarily indicate a problem, it might just be grumbly Since you did not mention you have tested your water, the first thing I would do if I noticed strange behavior is test the water for ammonia, nitrite and nitrate.

(Just because the other three look happy doesnt in and of itself mean the water is ok)