So, Ro, my little fish buddy who is keeping me company at university, seems to sit at the bottom of his tank a bit.
I know that that is usually a symptom of illness, but before I go nuts trying to treat every possible problem it could be... I just want to find out if this behaviour is okay.
While he's sitting on the bottom, if he sees any moment he is quick to get up and start swimming around excitedly, he still gets all defensive when I put a little tiger figurine up to his tank, and he eats happily and heartily. So he otherwise seems totally fine.
I just want to know what you guys have to say, because I'm certain you know much more than I do.
Some quick stats (just because it seems like the kind of thing that I'll have to state later): he's in a 1 gallon tank that has an under gravel filter and light. I recently changed the bottom of his tank from marbles to gravel (he never use to sit on the marbles... so maybe the gravel can help explain this habit), I do small weekly water changes, and he gets fed Betta Bio-Gold pellets. Oh... and he has a small heating pad too.