Opah (Lampris guttatus): First Known Warm-Blooded Fish Species

A team of researchers led by Dr Nicholas Wegner of NOAA Fisheries’ Southwest Fisheries Science Center has discovered a whole-body form of endothermy in a deep-water fish, the opah (Lampris guttatus), that produces heat through the flapping of wing-like fins and minimizes heat loss through a series of counter-current heat exchangers within its gills. Unlike [...] —> Read More