''Macrobrachium faustinum'' is a species of freshwater
shrimp
A shrimp (: shrimp (American English, US) or shrimps (British English, UK)) is a crustacean with an elongated body and a primarily Aquatic locomotion, swimming mode of locomotion – typically Decapods belonging to the Caridea or Dendrobranchi ...
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