Ordway, 1863 
Callinectes ornatus is a species of swimming crab in the genus Callinectes. It can be distinguished from the closely related Atlantic blue crab (Callinectes sapidus) by the presence of six frontal teeth on the carapace, compared with only four for C. sapidus. C. ornatus is also smaller, at a maximum carapace width of only 93 millimetres (3.7 in), compared to 230 mm (9.1 in) in C. sapidus, and is therefore not commercially exploited.
Their shells are light yellow-brown to red-brown in color. The lower tips of the claws are blue. The two spikes on each side of their shells are not as long as in blue crabs. They can be found in the western Atlantic Ocean, as well the Caribbean coastlines. Their diet consists of small crustaceans and small fish. They are also scavengers.
- "Callinectes ornatus". Integrated Taxonomic Information System. Retrieved October 27, 2010.
- Susan B. Rothschild (2004). "Sandy beaches". Beachcomber's Guide to Gulf Coast Marine Life: Texas, Louisiana, Mississippi, Alabama, and Florida (3rd ed.). Taylor Trade Publications. pp. 21–38. ISBN 978-1-58979-061-2.
- Albert Ordway (1863). "Monograph of the genus Callinectes". Boston Journal of Natural History. 7 (4): 567–583.
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