My new fish that I have had about for a week now has been hiding at the bottom of the tank that i've actually started looking on the floor for him ( I do have a cover on the top) and eventually he comes out ..
. I do have a cover that goes on the bottom with holes that collects food and whatnot but it is not small enough for him. I'm thinking he is hiding under the heater since its floating on an angle,he is still eating and swimming around,he looks healthy but im wondering why is he hiding. I have done 2 tank changes since i've got him. Thanks!