HomeFish encyclopediaRay-finned fishesToadfishesToadfishesFlat toadfish Flat toadfish (Colletteichthys dussumieri) Scientific name: Colletteichthys dussumieri Valenciennes, 1837 The Flat toadfish (Colletteichthys dussumieri) is a marine fish of the family Batrachoididae. Native range: Western Indian Ocean, found in the Persian Gulf and along the coasts of Pakistan, India, and Sri Lanka. BiologyDorsal spines (total): 3; Dorsal soft rays (total): 19-22; Anal soft rays: 15 - 17; Vertebrae: 27. This has the dorsocranium under the skin completely covered by epaxial trunk muscles; frontal bones solid, lacking a foramen on each side; one short subopercular spine, often with a small second point below; head and body with no scales; a funnel-shaped pit at top of pectoral-fin axil, with glandular tissue inside and extending from ventral pit margin onto axil; no maxillary flap; lower gill opening well below lower pectoral-fin base; head into SL 2.4- 2.8 times; supraorbital tentacles present above posterior half of eye; and all five pectoral-fin radials ossified. Dorsal-fin elements III,19-22; anal-fin rays 15-17; pectoral-fin rays 21-24; vertebrae 27.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameColletteichthys dussumieriFamilyBatrachoididae (Toadfishes)OrderBatrachoidiformes (Toadfishes)ClassActinopterygii (Ray-finned fishes)Maximum length27.0Common length20.0EnvironmentMarine; demersalClimateTropicalDistributionWestern Indian Ocean: found in the Persian Gulf and along the coasts of Pakistan, India, and Sri Lanka.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercialResilienceMedium, 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