:  The Triplefins Home  >  Library  >   Fish Taxonomy   >  Triplefins Back Taxonomy: Perciformes, Triplefins  (Tripterygiidae) General Information: There are 20 genera and 115 species of triplefins. They all have a 3-part dorsal fin, the first two are spinous and the third is soft. They have large pectoral fins and forward-placed pelvic fins they use to prop themselves up. They reach a maximum size of about 2 inches. Diet: The triplefins eat small benthic invertebrates. Final Note: The triplefins are excellent inhabitants of reef aquaria. They should be housed in a peaceful community tank with fish that are not piscivores lest they become prey to their tankmates. Examples at SeaScape Studio: Emerald Blenny Back