HomeFish encyclopediaRay-finned fishesPerch-like fishGrunters or tigerperchesR?emer's grunter R?emer's grunter (Hephaestus roemeri) Scientific name: Hephaestus roemeri Weber, 1910 The R?emer's grunter (Hephaestus roemeri) is a freshwater fish of the family Terapontidae. Native range: Asia, known only from Digul and Lorentz rivers in Irian Jaya, Indonesia. Reported from Binge river, Papua New Guinea. BiologyDorsal spines (total): 11 - 12; Dorsal soft rays (total): 12-14; Anal spines: 3; Anal soft rays: 9 - 10Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHephaestus roemeriFamilyTerapontidae (Grunters or tigerperches)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length30.0EnvironmentFreshwater; demersalClimateTropicalDistributionAsia: known only from Digul and Lorentz rivers in Irian Jaya, Indonesia. Reported from Binge river, Papua New Guinea.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026