You're partially right. Milt is actually the sperm of male fish. The fish you are referring to are lobe-finned fish, and they do have paddle-like fins!
Here's why they're special:
* Lobe-finned fish have fleshy, muscular fins supported by bones. These fins are more robust and flexible than the ray-fins of most modern fish. They are thought to have been the evolutionary ancestors of land vertebrates.
* Paddle-like fins are a characteristic of some lobe-finned fish, particularly those that live in shallow water or muddy environments. These fins allow them to push off the bottom and maneuver effectively.
Examples of lobe-finned fish with paddle-like fins:
* Lungfish: These fish have lungs and can breathe air. Some species have paddle-like fins that help them move along the bottom.
* Coelacanths: These ancient fish have powerful fins that help them maneuver in deep water.
Let me know if you have any other questions about fish!