Belongs within: Percomorpharia. Sweepers Published 8 July 2017 It’s time to meet the sweepers. Sweepers, Pempheridae, are a group of moderately sized marine fish (usually about fifteen to twenty centimetres in length) found around tropical reefs in the Indo-Pacific and western Atlantic. I don’t know why they’re called sweepers, but in some areas they may… Continue reading Pempheridae