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Fish tags have come a long way in recent years. ... The tags are attached surgically to the dorsal fin of the fish to be tracked, and as it swims the strip generates power for the electronics.

Those pinging tags scientists use to track and study fish may also be proving predators an acoustic roadmap to find them.. Testing the theory on grey seals which are known to use sound to their ...

The DNR says the adipose fin is a small fin located behind the dorsal fin and is only present on several species of fish (e.g. salmon, trout, catfish), adding they usually have coded tags embedded ...

Officials say most trout and salmon with an adipose fin clip have a coded-wire tag in their snout. Anglers who catch an adipose fin clipped fish is asked to turn in the head at a local drop-off ...

Though present in more than 6,000 living species of fish, the adipose fin, a small appendage that lies between the dorsal fin and tail, has no clear function and is thought to be vestigial.

The largest tagged great white shark on record in the Atlantic Ocean resurfaced off the coast of North Carolina this week, scientists said ...

Photo Gallery: Strange Fish and Sea Creatures. Thomas A. Stewart at the University of Chicago has anchored his nascent research career on that tiny fin.

Despite evidence that land-based animals evolutionarily came from the sea, scientists still struggle to determine how fish eventually developed limbs. Now, a new study furthers our understanding ...

Fish fins are extremely flexible yet also strong. A special segmented fin design is the key to this useful combination of properties and could inspire new morphing materials.

The segmented nature of fish fin rays allows them to be easily morphed by pulling at the bottom of the ray. Francois Barthelat, CC BY-ND Why it matters.

Fish fins aren’t just for swimming. They’re feelers, too. The fins of round gobies can detect textures with a sensitivity similar to that of the pads on monkeys’ fingers, researchers report ...