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The carapace is flattened with smooth side and rear margins, width is up to 18 mm (0.71 in), [2] and long whip-like antennae grow from the front corners, with the short rostrum extending beyond the large prominent eyes.
The carapace of Cardisoma guanhumi can reach a width up to 15 centimetres (6 inches). [5] As with many crab species, males possess dimorphic claws; the larger claw can become longer than the carapace's width. The eyes are stalked and their colour ranges from a deep blue to a pale grey. Juveniles generally have a brown carapace with orange ...
The carapace of a Speckled swimming crab is light brown, light maroon, or olive with many white or tan irregular round spots. [6] The males tend to be more colorful. [6] The carapace can reach lengths between 4.5 and 6 inches wide (~120-150mm). [6] Each side of the carapace consists of nine lateral teeth with the last extending outward. [6]
When young, these crabs typically have a blueish/violet carapace, red–colored legs, and whitish claws. This coloration usually fades as the animal grows older. They can reach a carapace size of 20 cm across, although captive individuals rarely reach this size.
Portunus pelagicus, also known as the blue crab, blue swimmer crab, blue manna crab and flower crab is a species of large crab found in the Indo-Pacific, including off the coasts Indonesia, [1] Malaysia, [2] Cambodia, [3] Thailand, [4] the Philippines, [5] and Vietnam; [6] and in the intertidal estuaries around most of Australia and east to New Caledonia.
Blue crab escaping from the net along the Core Banks of North Carolina.. Callinectes sapidus (from the Ancient Greek κάλλος,"beautiful" + nectes, "swimmer", and Latin sapidus, "savory"), the blue crab, Atlantic blue crab, or, regionally, the Maryland blue crab, is a species of crab native to the waters of the western Atlantic Ocean and the Gulf of Mexico, and introduced internationally.
Cardisoma crassum is a fairly small species with a carapace broader than it is long. Smith's original description measured three males and one female; the average male had a carapace measuring 53.7 mm × 65.4 mm (2.11 in × 2.57 in), measured in length × width. The female measured 53 mm × 64.5 mm (2.09 in × 2.54 in). [2]
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. [2] 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 ...