HomeFish encyclopediaRay-finned fishesPerch-like fishPorgiesGrass porgy Grass porgy (Calamus arctifrons) Scientific name: Calamus arctifrons Goode & Bean, 1882 The Grass porgy (Calamus arctifrons) is a marine fish of the family Sparidae. Native range: Western Central Atlantic, southern Florida to Louisiana in the USA. Also in eastern Gulf of Mexico. BiologyUsually has dark spot (larger than pupil) on lateral line just behind gill opening.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCalamus arctifronsFamilySparidae (Porgies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length25.0Common length20.0EnvironmentMarine; demersal; non-migratoryClimateTropicalDistributionWestern Central Atlantic: southern Florida to Louisiana in the USA. Also in eastern Gulf of Mexico.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercial; bait: occasionallyResilienceMedium, 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