Does posiden have a fish tail?

While Poseidon is often depicted with a trident and associated with the sea, he doesn't have a fish tail.

In traditional Greek mythology, Poseidon is a god, not a sea creature. He is often shown in art as a strong, powerful man with a beard and a trident.

The image of a fish-tailed sea god is more closely associated with mermaids and other mythical creatures, not with Poseidon himself.