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The Japanese spider crab (Macrocheira kaempferi) is a species of marine crab and is the biggest one that lives in the waters around Japan. At around 3.7 meters, it has the largest leg-span of any arthropod. The Japanese name for this species is taka-ashi-gani, (Japanese: タカアシガニ), literally translating to "tall legs crab". It goes ...
Endemic crustaceans of Japan (9 P) Pages in category "Crustaceans of Japan" The following 19 pages are in this category, out of 19 total.
Crabs vary in size from the pea crab, a few millimeters wide, to the Japanese spider crab, with a leg span up to 4 m (13 ft). [6] Several other groups of crustaceans with similar appearances – such as king crabs and porcelain crabs – are not true crabs, but have evolved features similar to true crabs through a process known as carcinisation.
Although most crustaceans are small, their morphology varies greatly and includes both the largest arthropod in the world – the Japanese spider crab with a leg span of 3.7 metres (12 ft) [45] – and the smallest, the 100-micrometre-long (0.004 in) Stygotantulus stocki. [46]
B. latro is both the largest living terrestrial arthropod and the largest living terrestrial invertebrate. [ 12 ] [ 13 ] Reports of its size vary, but most sources give a body length up to 40 cm (16 in), [ 14 ] a weight up to 4.1 kg (9 lb), and a leg span more than 0.91 m (3 ft), [ 15 ] with males generally being larger than females. [ 16 ]
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]
Most krill are about 1–2 centimetres (0.4–0.8 in) long as adults. A few species grow to sizes on the order of 6–15 centimetres (2.4–5.9 in). The largest krill species, Thysanopoda cornuta, lives deep in the open ocean. [35] Krill can be easily distinguished from other crustaceans such as true shrimp by their externally visible gills. [36]
Triops is a genus of small crustaceans in the order Notostraca (tadpole shrimp). The long-lasting resting eggs of several species of Triops are commonly sold in kits as pets. The animals hatch upon contact with fresh water. Most adult-stage Triops have a life expectancy of up to 90 days and can tolerate a pH range of 6 to 10. In nature, they ...