Skeletal Fish

This unnamed fish appears in the Samurai Jack episode, XCV.

Overview
It is described as a blue colored transparent predatory fish with a visible skeletal features including its fins and its skull filled with large sharp teeth, and six black eyes with green irises.

The creature appears in the episode, where it spots Jack (while carrying Ashi on his back) trying to escape to the blowhole of another creature. The giant fish chases Jack until he reaches to the top able to escape from it. After Aku's defeat, it is unknown if it will exist without Aku's rule.