I have a cherub angel in my 75g that spends at least half the day swimming laps around the seaweed clip. It doesn't matter if there's nori in there or not, nor does he try to prevent the other fish from eating.I once timed him and he spent 7 min straight, swimming in small circles around the clip
this is not a sign of a happy fish.
Is my cherub the only neurotic one out there or do they all do this?