Sargassum fish Sargassum fish The sargassum fish, anglerfish, or frog fish ("Histrio histrio") is a frogfish of the family Antennariidae, the only species in its genus. It lives among "Sargassum" seaweed which floats in subtropical oceans. The scientific name comes from the Latin "histrio" meaning a stage player or actor, and refers to the fish's feeding behaviour. "Histrio histrio", a strange-looking fish, blends well with its surroundings in its seaweed habitat. It is laterally compressed and its length can reach . The colour of the body and the large oral cavity is very variable, but is usually mottled and spotted yellow, green,
Sargassum color and consist of a holdfast, a stipe, and a frond. Oogonia and antheridia occur in conceptacles embedded in receptacles on special branches. Some species have berrylike gas-filled bladders that help the fronds float to promote photosynthesis. Many have a rough, sticky texture that, along with a robust but flexible body, helps it withstand strong water currents. Large, pelagic mats of "Sargassum" in the Sargasso Sea act as one of the only habitats available for ecosystem development; this is because the Sargasso Sea lacks any land boundaries . The Sargassum patches act as a refuge for many species in different