Crabfolk
"Crab people, crab people, taste like crab, talk like people. All things girl, keep getting better. Crab People! You came into my life. Crab people! And my world never looked so bright. Crab People!"
- – South Park
Crabfolk (the race formerly known as Crabmen) are a primitive race of humanoid crabs that are amongst the oldest aquatic humanoids in Dungeons & Dragons, having debuted in the Fiend Folio. They even had PC stats in Dragon Magazine #250. They returned for 5th edition in Mordenkainen's Fiendish Folio.