Ozawa Crab
Ozawa crab is a freshwater crab belonging to the genus Ozawa. It coexists with Geothelphusa dehaani in river habitats in southern Kyushu, Kagoshima Prefecture, and the Osumi Peninsula in Japan. With G Compared to Dehaani, the maximum body size of the Ozawa crab is smaller and it mainly lives in water (aquatic), while G Dehaani may live both in water and on land (amphibious). The differences in habitat and activity patterns among Geothelphusa species are attributed to their microenvironment and the impact of interspecific competition in symbiosis.
Dehani Sawa Crab
The Geothelphusa dehaani crab (scientific name: Geothelphusa dehaani) is a type of crab classified in the order Shrimp (Decapoda), suborder Crabs, and family Characidae. It is a unique species in Japan, a pure freshwater crab that spends its entire life in freshwater areas. The specific name dehaani in the scientific name is named in honor of the Dutch zoologist Wilhelm de Haan, who made contributions to the classification of crustaceans in Japan.
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