A realative of the Ussal Crab, the Gada crab is one tenth it's cousins size. They live in massive colonies on the skins of Tarkavas. They keep the Tarkava clean and healthy and the Tarkava gives them a place to stay. While usually very small, Gada crabs, when alone, have been known to grow to enourmous sizes, due to their habit of constantly eating all the bacteria around them. The largest recorded Gada Crab was two thousand fift seven inches tall.