Se tu

The Se Tu was first seen in "The Fortuneteller".

Anatomy
The Se Tu is a large green fish found in the rivers of the southern and western Earth Kingdom. It has two short whiskers positioned directly below the eyes, as well as a long dorsal fin running from the top of its head down the spine and two greenish-yellow pectoral fins positioned below the large blue stripes that traverse the sides of its body.

Connection
Although there are no solid green catfish like the one seen in Avatar, catfish inhabit freshwater habitats throughout the world. The Se Tu also is similar to the salmon in their spawning ritual. These fish are very similar to the "fish-men" from The Legend of Zelda: The Wind Waker.

Behavior
This fish is known for its habit of repeatedly jumping high out of the water, often looking to spectators as if it were taunting them. The fish is often said to have "thoughtful" eyes and human-like features. These fish are the favorite food of the Platypus Bear and have been known to grow to the size of full-grown man. Once a year, these fish swim hundreds of miles up river to spawn.