''Macrobrachium faustinum'' is a species of freshwater
shrimp
Shrimp are crustaceans (a form of shellfish) with elongated bodies and a primarily swimming mode of locomotion – most commonly Caridea and Dendrobranchiata of the decapod order, although some crustaceans outside of this order are refer ...
that was first described in 1857.
''M. faustinum'' is dark brown and found from Florida to the Caribbean and southwards to Venezuela.
References
Palaemonidae
Freshwater crustaceans of South America
Crustaceans described in 1857
{{Caridea-stub