minute check up (gold fish)
Now Playing: how to tell a if fish is healthy or not
when fish hang out by the intake valve(s) it could be one of two things:1. not eniough aration in the water. 2. is it could be a parisite. to solve the problem of the airation valve add more airation via the gang valve. but if its a parisite you should see the parisite in and on the gills, to treat gat a med. that can kill the parisite. If your fish is gulping air from the top of the water means that there is not eniough airation to solve this problom folow the instructions above.
Stress and the immune system is a very common and sometimes deadly if it has not been adressed and changed.
it may be that there are to many fish in the tank. rule of thumb is that there should be one fish for every gallon. For exsample a ten gallon tank you should have ten or less fish.