HomeFish encyclopediaRay-finned fishesAnglerfishesBatfishesSlantbrow batfish Slantbrow batfish (Ogcocephalus declivirostris) Scientific name: Ogcocephalus declivirostris Bradbury, 1980 The Slantbrow batfish (Ogcocephalus declivirostris) is a marine fish of the family Ogcocephalidae. Native range: Western Atlantic, northern Gulf of Mexico to Straits of Florida in the USA. BiologyVertebrae: 18 - 20. Rostrum generally sloping downward with respect to the long axis of the body instead of being horizontal or tilted upward; rostrum length to disk margin length, 2.8-3.7. Ventral surfaces of pectoral and pelvic rays without fleshy pads. Pectoral ray count usually 11. Subopercular lateral line scale count usually 8 (7-9). Vertebral count usually 20, lateral line scale usually 25. Distinguished from parvus by its flatter head (HL 4.3-5.1 to SL) and its larger mouth width of mouth to head depth 1.4 - 1.9.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameOgcocephalus declivirostrisFamilyOgcocephalidae (Batfishes)OrderLophiiformes (Anglerfishes)ClassActinopterygii (Ray-finned fishes)Maximum length16.5Depth range4–388 m (13–1273 ft)EnvironmentMarine; demersal; depth range 4 - 388 mClimateTropicalDistributionWestern Atlantic: northern Gulf of Mexico to Straits of Florida in the USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, 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