:  The Triplefins
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