Inktober Monstrosities: L for Locathah

The Locathah is a real classic of D&D beast. It first appeared in the original D&D supplement Blackmoor all the way back in 1975, then later in the first edition Monster Manual, the Monstrous compendium (volum 2) and Monstrous Manual for second edition and the Monster Manual for third edition, and then, despite its prominent placement in the first three versions, all but disappeared.

Described as a race of  aquatic humanoids, that live in nomadic, civilized societies, roaming shallow warm waters, hunting and gathering food.

Quite why they suddenly went into obscurity is unclear, but it is probable they were just competing for an already over crowed niche of aquatic fish-like humanoids, competing with other, more "exciting" races, such as the sahuagina and the kuo toa.

Still, the Locathah is the creature that most closely resembles the iconic Gill Man, best known as the Creature from the Black Lagoon, and given a new renaissance in Guillermo Del Toro's The Shape of Water.