Shimmering carapaces make crabs attractive to pet owners. To answer the growing demand, fishermen collect and trade crustaceans, often not knowing what exactly they have handed over to their clients.

Three researchers led by Chao Huang recently scored big when they together visited a Chinese pet store in search of interesting creatures. In this case, they were looking at the crabs the store had to ...

Shimmering carapaces and rattling claws make colourful freshwater crabs attractive to pet keepers. To answer the demand, fishermen are busy collecting and trading with the crustaceans, often not ...