I finally moved my aggressive killifish into a ten gallon all by himself - he was always chasing everyone else around and I felt bad for those getting chased. But now I feel kind of bad for the killi! I've never worried about it before, but now I feel like he's bored and has nothing to do and no real stimulus. I try to give him live food when I can catch it, which he loves, but usually he just gets flake. Now that he's in the new tank, he seems even less interested in flake than before, when there was the challenge of eating everything before any other fish got to it. So, does anyone feel like their fish ever get bored or lonely?
On the the other hand, one of our bettas hates being in rooms without activity and only builds a nest when he is on the counter between the kitchen and the living room, where we are most of the time. He constantly watches us and follows us from one side of the tank to the other as we walk back and forth. So I think it depends on the fish's personality.
