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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.
The fiddler crab or calling crab can be one of the hundred species of semiterrestrial marine crabs in the family Ocypodidae. [2] These crabs are well known for their extreme sexual dimorphism, where the male crabs have a major claw significantly larger than their minor claw, whilst females claws are both the same size. [ 3 ]
The Tasmanian giant crab is one of the largest crabs in the world, reaching a mass of 17.6 kg (39 lb) and a carapace width of up to 46 cm (18 in). [6] Among crabs, only the Japanese spider crab (Macrocheira kaempferi) can weigh more. [5] Male Tasmanian giant crabs reach more than twice the size of females, [7] which do not exceed 7 kg (15 lb). [6]
Maguimithrax spinosissimus, [2] also known as the Caribbean king crab, [3] West Indian spider crab, channel clinging crab, reef or spiny spider crab, and coral crab, is a species of spider crab that occurs throughout South Florida and across the Caribbean Islands.
They are considered true crabs, with 4 pairs of walking legs and a pair of proportionally large and long, flattened clawed legs (chelipeds). The trapezoidal carapace has a unique mottled pattern, with around 100 to 200 reddish or orange spots on a white or pink background, earning it the common name of the “rust spotted guard crab”.
Ranina ranina, also known as the Huỳnh Đế crab, [2] (red) frog crab or spanner crab, [3] is a species of crab [4] found throughout tropical and subtropical habitats. [5] It is often fished for its meat.
The crab is orange with white spots along the legs. [8] It is reported to have a gentle disposition despite its ferocious appearance. [8] The Japanese Spider Crab also has a unique molting behavior that occurs for about 100 minutes, in which the crab loses its mobility and starts molting its carapace rear and ends with molting its walking legs. [9]