Manaan

Manaan was an aquatic planet that was home to the fish-like Selkath.

In-Universe Information
Manaan, though located in an insignificant system, was the sole source of the liquid called kolto. Covered entirely in beautiful azure oceans, it was where Revan and company traveled in search of one of the star maps. Its native sentient inhabitants were the fish-like Selkath, while animal life included the fearsome Firaxa shark.

Appearances in Star Wars Media
Manaan first appeared in the popular 2003 video game Star Wars: Knights of the Old Republic. It later appeared in the Imperial-era game Star Wars: Empire at War.