HomeFish encyclopediaRay-finned fishesClingfishesClingfishes and singleslitsEmerald clingfish Emerald clingfish (Acyrtops beryllinus) Scientific name: Acyrtops beryllinus Hildebrand & Ginsburg, 1927 The Emerald clingfish (Acyrtops beryllinus) is a marine fish of the family Gobiesocidae. Native range: Western Atlantic, southern Florida, USA and Bahamas to Esp?rito Santo, Brazil. BiologySpend the entire cycle in beds of turtle grass, Thalassia usually attached to the underside of the blades of the seagrass. Feed on small crustaceans: Isopoda, Amphipoda, Harpacticoida, and Ostracoda. Multiple spawner.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAcyrtops beryllinusFamilyGobiesocidae (Clingfishes and singleslits)OrderGobiesociformes (Clingfishes)ClassActinopterygii (Ray-finned fishes)Maximum length2.5EnvironmentMarine; reef-associatedClimateTropicalDistributionWestern Atlantic: southern Florida, USA and Bahamas to Esp?rito Santo, Brazil.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (K=2.42; tmax=1; assuming tm SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026