Trigonostigma heteromorpha Fish Profile: Genus Trigonostigma Species heteromorpha Common name Harlequin Rasbora Origin Southeast Asia Tank Size min. 40 - 80 cm Temperature 22 - 28 °C pH Value 6.0 - 7.0 Fish Size 4-4,5 cm Food Omnivore Care Sociable, Schooling fish, Diurnal