Author: Böhlke & Randall, 1963
FBname: Blackcap basslet
Comments: A solitary species (Ref. 26340) found on nearly vertical cliffs and drop-offs beyond outer reefs.  Often upside-down.  Retreats into recesses when alarmed (Ref. 9710).  Has been reared in captivity (Ref. 35420).  Most common in water more than 30 m deep.  Gradually replaces <i>G. loreto</i> at depths of 15-30 m (Ref. 26938).