:  The Sand Perches
Taxonomy: Perciformes, Sand Perches  (Pinguipedidae)
General Information: There are 4 genera and 50 species of sand perches. They all have cylindrical bodies with pelvic fins anterior to the pectoral fins with a long continuous dorsal fin.
Diet: This group feeds on small benthic invertebrates and fish.
Final Note: The sand perches are considered hardy captive species. They are a threat to small invertebates in a mixed-species aquarium system.

Examples at SeaScape Studio:
Orange Sandhopper