HomeFish encyclopediaRay-finned fishesPerch-like fishWeeverfishesLesser weever Lesser weever (Echiichthys vipera) Scientific name: Echiichthys vipera Cuvier, 1829 The Lesser weever (Echiichthys vipera) is a marine fish of the family Trachinidae. Native range: Eastern Atlantic, North Sea to the Mediterranean, Morocco and Madeira. Reported from the Canary Islands. BiologyBody elongate. Coloration grey-brown on the back and silvery-white on the sides. No spines in front of the eyes.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEchiichthys viperaFamilyTrachinidae (Weeverfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length15.0Common length10.0EnvironmentMarine; demersalClimateSubtropicalDistributionEastern Atlantic: North Sea to the Mediterranean, Morocco and Madeira. Reported from the Canary Islands.Conservation status (IUCN)Not EvaluatedThreat to humansVenomousUsesFisheries: minor commercial; gamefish: yes SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026