Orange Roughy | 水產百科網

Theorangeroughyisapredatoryspeciesthatlivesondeepseamounts(​underseamountains)inmostoceanbasinsaroundtheworld.Thisspecies,alsoknown ...

Adult orange roughy are predators that live on or just over the seafloor, but near areas where strong currents bring their preferred prey (other fishes and squids) to them. Deep seamounts provide the right oceanographic conditions to form these strong currents. Orange roughy grow no bigger than a few feet (less than one meter) and are eaten by larger fishes and sharks that feed near the seafloor.

This species reproduces through a behavior known as broadcast spawning, where several females release eggs and several males release sperm into the water column above the seafloor, all at the same time. This method increases the likelihood that eggs will become successfully fertilized and that fertilized eggs will not be eaten by egg predators near the seafloor. Scientists believe that, though orange roughy normally live in high densities, they migrate to form even denser aggregations for the purposes of spawning. Individuals do not reach sexual maturity until they are least 20 year...