The sargassum fish, also known as sargassum fish or Histrio histrio, is a unique species found primarily in the Sargasso Sea. This fish is notable for its ability to camouflage itself among floating seaweed, which helps it evade predators. It has a flattened body and can change color to blend in with its surroundings. Sargassum fish are small, typically growing to about 15 centimeters in length. They feed on small crustaceans and other tiny marine organisms that inhabit the sargassum seaweed. Their unusual appearance and behavior make them a fascinating subject for marine biologists and ocean enthusiasts alike.