Right so I've had Oberon for a little over two weeks and he's now doing something that is rather confusing and I want to know if I'm just being stupid or if there's something wrong.
Just starting tonight (I think) he's started lying at the bottom of his tank. He's not on his side, and it doesn't look like he's having any trouble breathing (though sometimes his gills don't move and it's like he's holding his breath) and he stays like that for a number of minutes and then he's active and energetically swims to the surface, gets some air, floats around like normal and then goes back to the bottom. Now I have no idea how fish sleep, so maybe he's just tired? I know his light's been on for a while and it's usually the time I turn it off to sleep... but I'm afraid he might be sick and want to know what the deal is before I go to bed and have nightmares of waking up to a dead fish.
The tank is a 2 gal and I just changed the water today, it's at the same levels and stuff as usual, and it's currently at a balmy 80*. Fish has some darker patches on his scales but I'm 99.9% sure that's just his coloring. He doesn't appear to be in any distress other than the fact that nothing but his mouth and gills are moving.
Please tell me he's tired and I'm not a failure and killing my fish?