Sargassum fish it ranges from the Gulf of Maine south to Uruguay. It has been reported from northern Norway, but that sighting is likely to be as a result of its having been carried along by the North Atlantic Current. The sargassum fish is a voracious ambush predator that is also a cannibal. One individual was dissected and found to have 16 juveniles in its stomach. It stalks its prey among the tangled weeds, relying on its cryptic camouflage for concealment. It can clamber through and cling to the seaweed stalks with its prehensile pectoral fins. It dangles its esca as a
Sargassum muticum around the farming structures, requiring additional maintenance. It also gets entangled with the propellers of the boats. Mechanical removal—however this promotes dissemination of the species and the technique is labor-intensive. Chemical—the use of herbicides is advised against, because it poses a major risk to the environment and others organisms. Biological—there are few natural predators, one example is a little copepod that will eat only the unhealthy and damaged parts of "S. muticum." Currently the distribution is stabilized, and only mechanical removal is performed. There are some potential uses for "Sargassum muticum." In agriculture, algae are used as sources of nitrate