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Description:
Sargassumfish are members of the frogfish family that reach 6 inches in length.  As in other frogfishes, the body is moderately compressed and globular in shape.  They are weak swimmers, and thus rely on camouflage for both concealment from predators and for finding prey of their own.  They are closely associated with, and resemble, the drift algae Sargassum.  Body color consists of various shades of yellowish, orange, tan, and brown in mottled light and dark blotches.  The mouth is small with a wide gape.  The pectoral fins, which the fish often uses to rest upon, are fleshy with long bases.  The first spine on the dorsal fin is elongate and often used as a lure to attract prey.  Many fleshy flaps cover the smooth skin and aid in concealment. 

Habitat:
Sargassumfish exist exclusively on floating Sargassum algae. 

Range:
Sargassumfish range from New England south through Bermuda, Florida, the Gulf of Mexico, the Caribbean, and West Indies, to Brazil. 

 

 


 

The well camouflaged sargassumfish.  Photo courtesy of  University of Texas Marine Science Institute. 
 
 

Sargassum  is a genus of floating brown algae that occurs throughout the world's tropical and temperate waters.  Many species utilize Sargassum during some stage of their life cycles for habitat, temporary refuge, and for feeding.  One report by the National Oceanographic and Atmospheric Administration states that Sargassum supports over 140 species of marine invertebrates, 110 species of fishes, and 4 species of sea turtles.