My oscar has made a hole in the gravel quite a big one. What do u tink it might be doing? is it juz having fun or wat? It eats its meal evryday and nothing has changed. And also, my oscar is scared of the tank light whenever i flick it on , it will hide behind the rock. I'm not sure whther i should take the rock out as if i do this, im afraid that the oscar would hav no other hiding place and might be stressed out and might die. please offer your suggestions it would be gratefully appreciated.

Many cichlids will excavate and make pits in the substrate when they are breeding, this is to hide and protect the fry after they hatch. If you've ever seen footage of African cichlids in the wild, you will see a very good example of this. This behaviour is quite normal for not only are breeding pair, but single Oscars as well, I think it's just instinct. They probably find themselves doing it without actually knowing why they are doing it.

Giving the fish places to hide is very important. Rocks also have a very good surface for bacteria to grow on so this all helps control the toxins in your tank.

Hmm..Breeding u say? But I onli have 1 oscar in my tank. I had 2 more b4 but they died. Do u tink that it might hav mated with one of the either 2 b4 they died? Or mayb it mated with another oscar at the fish store? If so any suggestions on how i should give away the fry when they are born? I dont intend to keep them mayb just a few. THANKS.

I have a Red Devil that digs constantly. Every time I vacuum the gravel, that fish will dig it all back the way it was. I've come to the conclusion that it's just marking it's territory. I've never seen that type of behavior in my Oscars. But I'm sure that isn't out of the question.

Ok THANK YOU for your help