Tuna are unique among bony fish for several physiological reasons:
Tuna Species - International Seafood Sustainability Foundation Tuna are unique among bony fish for several
: Their torpedo-shaped bodies and streamlined fins allow them to swim at sustained high speeds. The Atlantic Bluefin can reach 43 mph, while Yellowfin are even faster. Tuna are unique among bony fish for several
: They are "obligate ram ventilators," meaning they must swim constantly to push oxygen-rich water over their gills. Major Commercial Species Tuna are unique among bony fish for several