Author: Regan, 1921
Comments: Predominantly found in open offshore waters, sometimes found close to the shore in sandy areas (Ref. 4983).  As suggested by its long and coiled intestines, <i>H. nigripinnis</i> is a vegetarian.  It feeds mainly on suspended phytoplankton.  Like most <i>Haplochromis</i> species, it is an opportunistic feeder (Ref. 558).