Not really an emergency, since he's still acting and looking normal. Moby has been eating enthusiastically, though he rejected pellets for flakes, oddly enough. He pooped the first few days I had him, but then a couple days ago he had this really big one, like bigger than I thought a fish as tiny as him could possibly make. And since then I haven't seen any more poop at all. He doesn't look bloated. I fed him one daphnia earlier, since I heard that can get their systems moving. Any suggestions?
He's a new fish, and I'm doing a fish-in cycle with him in a 5 gallon.