Trigonostigma hengeli Fish Profile: Genus Trigonostigma Species hengeli Common name Slender Harlequin Rasbora Origin Indonesia Tank Size min. 40 - 60 cm Temperature 22 - 25 °C pH Value 6.0 - 7.0 Fish Size 3,5-4 cm Food Omnivore Care Sociable, Schooling fish, Diurnal