HomeFish encyclopediaSharks and RaysGround sharksWeasel sharksStraight-tooth weasel shark Straight-tooth weasel shark (Paragaleus tengi) Scientific name: Paragaleus tengi Chen, 1963 The Straight-tooth weasel shark (Paragaleus tengi) is a marine fish of the family Hemigaleidae. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0. Grey or grey-brown above, light below; no prominent markings on body and fins.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameParagaleus tengiFamilyHemigaleidae (Weasel sharks)OrderCarcharhiniformes (Ground sharks)ClassElasmobranchii (Sharks and Rays)Maximum length88.0EnvironmentMarine; demersalClimateTropicalDistributionWestern Pacific: Japan to Viet Nam, including Hong Kong and Taiwan. Report of a record from off Madagascar may be an undescribed Paragaleus which has just recently been collected.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: minor commercialResilienceVery Low, minimum population doubling time more than 14 years (Fec is assumed to be SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026