Tags: Crustacean.
Fredius is a genus of crabs in the family Pseudothelphusidae containing the following species:Fredius adpressus Rodríguez & Periera 1992Fredius beccarii (Coifmann 1939)Fredius chaffanjoni (Rathbun 1905)Fredius convexa (Rathbun 1898)Fredius denticulatus (H.