Well today I was about to go to class till my mom told me that my albino cat fish got bitten on its side. Hes not eating like a pig anymore, hes not swimming around like he use to but he does swim, and he chills. What do I do? Should I leave him in the tank or should I put him in 10gal tank but I have no filter or heater.

What's in with it?

Does it have a visible wound?

My experience with cats is that they sit and chill when they're full.

What kind of catfish is it?

idk but they its called an albino catfish. long,catfish face, and a eels tail. And also I was wondering what does it mean when an oscar has some missing scales and like an area of white( I think) On his gills?

It means your tank might be over crowded and fish are fighting.

Hrm. Tail looks like an eel? Is it a dewfish? Tandanus tandanus?

http://www.planetcatfish.com/catelog/species.php?species_id=325

First, I'd order/pick up a heater for that 10g as a just in case.

If the cat keeps getting picked on, you could first try some sort of smallish pvc tube and to rearange some of the tank decor. It may just be a territory issue. You didn't mention the size of the cat, but if it does keep getting picked on, your best bet would be to move it into the 10 provided it fits oke.

The other thing to do would be to try and watch to see just who's being aggressive. You said, convicts and JDs (both plural) so, something may be trying to pair up *cough*convicts*cough* and is cracking a can of whoopass on anything that gets too close.

Everythings okay no aggression towards the catfish so Im guess it got hurt on the rocks or something.

Maybe? Check the tank decor for something sharp or rough just in case.