Kuo-toa

Kuo-toa were a debased monstrous humanoid fish-like race that dwelt in the Underdark. They had human-like bodies and fish-like heads.

Religion
Most kuo-toas worshiped the goddess Blibdoolpoolp, though a few remote tribes worshiped Dagon. Blibdoolpoolp was the focus of the kuo-toas' lives, and even had her own monstrous, deformed kuo-toa breed: the giant kuo-toa leviathan.

Society
"Whip" was the name given to clerics of Blibdoolpoolp. "Monitor" was the name given to those that had trained to fight with nothing but their bodies since birth.

Kuo-toans maintained friendly relations with drow, their Underdark neighbours. They often raided seaside settlements for human victims.

One of their cities was Sloopdilmonpolp, the City of Pools. Others were Looblishar and Olleth.