Albino Coreys Unhappy

[Sazeyplus2]

I have a 10 gallon tank, 4 guppies, 3 albino coreys. Ph 7.4, Nitrates/Nitrites 0, ammonia 0.25ppm, water temp 81°, do 25% water changes weekly; last one 2 days ago. Guppies fine. Added the third Corey yesterday, started very happy and active. Today, all not eating or swimming. When I added him, let his bag sit in water a couple hours before adding the Corey (& none of the water he came in). I feed them tropical fish flakes and high quality shrimp pellets.

What am I missing?? I love these guys and don't want to loose them!

[stormhawk]

The problem here lies in your ammonia. Any detectable ammonia will harm these catfish. Your nitrates should not be zero either. A fully cycled tank should have some form of nitrate, which is then used by the plants if any. Improper acclimatisation and/or disease from the LFS will affect them as well.

Are the Corydoras showing any signs of heavy breathing?

[Sam]

Sazeyplus2, can you post a picture of him????

[tetrakid]

Personally, I wouldn't mix my Corys with other fish. From my brief experience with my new Sterbais, I find that they are rather helpless when it comes to feeding. They do not go for food like other fish like Tetras, Barbs, Bettas, etc. They feed by groping blindly with their snouts at the bottom of the tank, not seeing with their eyes. Unless a lot of food has sunk to the bottom and remain there, they don't stand a chance as far as meals are concerned.