Many fish species evolved parts of their fins into sharp, spiny, needle-like elements -- called fin spines -- that function to protect the fish against predators. Such spines have evolved ...

To escape predators beneath the waves, a flying fish can shoot out of the water and glide long distances because its paired pectoral and pelvic fins, longer and more rigid than those of other fish, ...

Dec. 31 (UPI) --Before early marine species could make the transition to land, they had to develop tools for getting around out of the water. They needed limbs. Now, thanks to the discovery and study ...

In addition to using their fins for swimming, many fish use them to sense pressure or textures – and it turns out the fins of some species are as sensitive to touch as the fingertips of humans and ...