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Longfins and Devilfish – Elusive and Fascinating Roundheads

Power's RoundheadEvery now and then, we find a new fish or invert that jumps its way to the top of our wish lists. My new favorites? The Roundheads aka Longfins, Marine Bettas, Prettyfins, Comets, Devilfish,  Spiny Basslets – fish from the family Plesiopsidae.

There are a few genera in this family that you may see in fish stores and aquariums. The most well-known (although still far from common) are the Assessors – the Yellow Devilfish (Assessor flavissimus) and the Blue Devilfish (Assessor macneilli). Wild-caught Assessors are still few and far between, but tankraised fish are slowly starting to become more common. Longfins, genus Plesiops are also becoming more common. The three you’re most likely to see are the Yellow AssessorCrimsontip Longfin (Plesiops coeruleolineatus), Northern Devilfish (Plesiops corallicola) and the Sharp-nosed Longfin (Plesiops oxycephalus). A few other fish from the Plesiopsidae family show up every now and then as well, like the Power’s Roundhead Grouper (Paraplesiops poweri) and the more well-known Marine Betta or Comet (Calloplesiops altivelis). Read More »