HomeFish encyclopediaRay-finned fishesPerch-like fishGrunters or tigerperchesRaymond's grunter Raymond's grunter (Hephaestus raymondi) Scientific name: Hephaestus raymondi Mees & Kailola, 1977 The Raymond's grunter (Hephaestus raymondi) is a freshwater fish of the family Terapontidae. Native range: Oceania, known only from the Morehead River in Papua New Guinea. BiologyDorsal spines (total): 12; Dorsal soft rays (total): 14; Anal spines: 3; Anal soft rays: 10 - 11Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHephaestus raymondiFamilyTerapontidae (Grunters or tigerperches)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length25.0EnvironmentFreshwater; demersalClimateTropicalDistributionOceania: known only from the Morehead River in 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