Mouth and lip types aside, you might wonder whether fish actually kiss. Most commonly in an aquarium, you might see fish “kissing” the surface of the glass.

These thick, plump lips have puzzled researchers for years, leaving them to wonder what drives this curious evolutionary trait. Recent research, led by Dr. Nagatoshi Machii at the Tokyo Institute ...

This is known as suction feeding. "One always assumes that fishes feed using their teeth, but, like us, the lips can be an essential tool," Bellwood says. "Imagine feeding without lips or cheeks; the ...

Scientists found fish with “heart-shaped” lip and “glittery” fins in slow rivers and discovered a new species: spotted gudgeon, study said.

Lip Service Bellwood and Huertas suggest that the tubelip wrasse’s slimy lips may provide a protective coat between the fish and the coral’s stinging cells while also facilitating suction feeding.

So, essentially the fish are using their lip mucus to better harvest the coral’s mucus. Mucus is, in general, a hot commodity in the marine ecosystem.

With specialized lips, these fish dine on razor-sharp, stinging corals Date: June 5, 2017 Source: Cell Press Summary: More than 6,000 fish species that live on coral reefs, but only 128 are known ...