yeah mine is about 4inch and he is in a 55 for now and he is always at the bottom swimming tho, hunting down little feeders , but yeah some are like that some just do it when they are new, just monitor our water
ha id lie on the bottom if I was housed with a trimac. lol Anyway mine always does this at night when the lights are off, and ive seen them do this in the mourning at the lfs where they where house with other arows, so most likely its stressed.