Mar 13, - List of Fish That Are Bottom Feeders. Sturgeons. Sturgeons are an ancient, nearly prehistoric type of bottom-feeding fish, with their lineage tracing back million years. Carp. TThe carp species present in North American waters was introduced from Asia and Europe. Catfish. Suckers. Catfish, loaches and other bottom feeders are an often neglected group of fish that do essential work in cleaning and maintaining your aquarium.