HomeFish encyclopediaRay-finned fishesPerch-like fishGrunters or tigerperchesLake grunter Lake grunter (Variichthys lacustris) Scientific name: Variichthys lacustris Mees & Kailola, 1977 The Lake grunter (Variichthys lacustris) is a freshwater fish of the family Terapontidae. Native range: Oceania, known only from Papua New Guinea. BiologyDorsal spines (total): 13; Dorsal soft rays (total): 10-11; Anal spines: 3; Anal soft rays: 8 - 9Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameVariichthys lacustrisFamilyTerapontidae (Grunters or tigerperches)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length17.0Common length10.0EnvironmentFreshwater; demersalClimateTropicalDistributionOceania: known only from Papua New Guinea.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (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