:  The Grammas Home  >  Library  >   Fish Taxonomy   >  Grammas Back Taxonomy: Perciformes, Grammas  (Grammatidae) General Information: The grammas are a small group, encompassing only 11 species in 2 genera. They reach a maximum size of about 4 inches, have an incomplete or absent lateral line (organ of hearing), and are often found on deep slopes on rubble bottoms. Diet: Most species are zooplankton feeders. Final Note: The genus Lipogramma is generally a deepwater group that may require dim light. They are territorial and generally only one gramma per tank is recommended. Examples at SeaScape Studio: Blackcap Basslet Japanese Basslet Royal Gramma Swalesi Basslet Swissguard Basslet Back