Lithoscaptus aquarius (photo from aquarium), author: van der Meij, Sancia E.T.
Caridina mertoni, author: Keith, Philippe
Liocarcinus pusillus (Leach, 1815), author: IMARES
Brush-clawed shore crab - Hemigrapsus takanoi, author: JP Vanderperren

DecaNet (World List of Decapoda)