HomeFish encyclopediaRay-finned fishesToadfishesToadfishesAtlantic midshipman Atlantic midshipman (Porichthys plectrodon) Scientific name: Porichthys plectrodon Jordan & Gilbert, 1882 The Atlantic midshipman (Porichthys plectrodon) is a marine fish of the family Batrachoididae. Native range: Western Atlantic, Virginia, USA and northern Gulf of Mexico to at least northern South America. BiologyDorsal spines (total): 2; Dorsal soft rays (total): 35-36; Anal spines: 0; Anal soft rays: 32 - 33. Branchiostegal photophore series restricted mid-ventral, with deep U-shaped apex anteriorly; margin of soft dorsal fin membranes with black blotches, black margin intermittent.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePorichthys plectrodonFamilyBatrachoididae (Toadfishes)OrderBatrachoidiformes (Toadfishes)ClassActinopterygii (Ray-finned fishes)Maximum length29.0Common length20.0Depth range100 m (328 ft)EnvironmentMarine; demersal; depth range ? - 100 mClimateTropicalDistributionWestern Atlantic: Virginia, USA and northern Gulf of Mexico to at least northern South America.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