HomeFish encyclopediaRay-finned fishesGrinnersLizardfishesSpeartoothed grinner Speartoothed grinner (Synodus sageneus) Scientific name: Synodus sageneus Waite, 1905 The Speartoothed grinner (Synodus sageneus) is a marine fish of the family Synodontidae. Native range: Indo-West Pacific, known only from Sri Lanka, the Arafura, Australia, and New Guinea. BiologyAn uncommon species found in shallow shelf waters. Caught mainly with artisanal gear. Sold fresh or dried salted in markets.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSynodus sageneusFamilySynodontidae (Lizardfishes)OrderAulopiformes (Grinners)ClassActinopterygii (Ray-finned fishes)Maximum length26.0Common length14.0Depth range12–30 m (39–98 ft)EnvironmentMarine; demersal; depth range 12 - 30 mClimateTropicalDistributionIndo-West Pacific: known only from Sri Lanka, the Arafura, Australia, and New Guinea.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceHigh, 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