Bodianus rufus, the Spanish Hogfish, is a familiar sight to Caribbean divers and snorkelers. Adults grow up to 40 cm (16 inches) and have an appetite for almost all invertebrates found in a reef tank—except the corals. Juveniles are canary yellow with blue or purple backs. Image: Scott W. Michael.
A denizen of deep water, the rare Neptune Grouper (Cephalopholis igarashiensis) would make a spectacular display animal for a larger aquarium dedicated to predatory fishes. It can reach a total length of about 17 inches (43 cm). From CORAL July/August 2018, GOING LARGE: Hardy Bigger Fishes. Image: Scott W. Michael
Cousin of the Comet or Marine Betta, this is a juvenile Bluegill Longfin, Plesiops corallicola—a true rarity in the trade. Adults can reach 7 inches (18 cm) in length, and they display a deep rich blue pigmentation. They are safe with corals but predatory on small fishes and benthic invertebrates. This specimen was captive-bred by Biota in Palau, and US local aquarium retailers will soon have access to limited imports of this new species. Image: Matt Pedersen.
Red Dragon Acropora, Acropora carduus. Image: Joseph Caparatta, www.uniquecorals.com. From CORAL, November/December 2015, RARITIES. A deepwater species that takes on vibrant colors under reef aquarium lighting, it is reportedly easier to keep than expected. Prices of cultured small colonies have been falling from once-astronomical levels.
Rhodactis sp. corallimorpharian, sold as the “Burning Brocade” Corallimorph by ReefGen. Image by Laura Birenbaum.
Zebra or Bumblebee Mantis Shrimp, Lysiosquillina maculata. Image: Eli Fleishauer/Quality Marine.
More information for this species at Roy’s List of Stomatopods for the Marine Aquarium, edited by Dr. Roy L. Caldwell at UC Berkeley.