Fish Architecture: Caudal Fins
If you want to know a lot about what a fish does in its day-to-day life, take a look at its tail!
Fishes with forked (D) or lunate (E) caudal fins are typically fast swimming pelagic fish. These particular shapes allow for minimum resistance against the surrounding water and allow these fishes to move quickly to capture prey or avoid predators.
Fishes with round (A) truncate (B) and emarginae © tails are typically able to move at high speeds in very short bursts, but are much slower than those with forked or lunate tails.
What about fishes with no caudal fins like a seahorse? Well, as you can imagine, they don’t go anywhere very fast.
Now you know why tuna, mackerel, sailfish, marlin and bonefish are so fast as well as why seatrout, grouper, barracuda, trout, bass and redfish pounce so quickly on a live bait, lure or fly
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