article_snippet: Before being identified as new species, the two types of crabs were known to have originally come from somewhere in Southeast Asia.
article_snippet: The crabs grow up to one inch wide (3cm) and live for up to three years.
article_snippet: Lukhaup, who is from Transylvania, the fabled home of Dracula, used contacts in the aquarium trade to find out where dealers were getting The crabs from and after several false leads, found dealers come from central Java.
article_snippet: However, while this may be exciting for scientists, there are concerns that wild populations could dwindle if too many crabs are collected for pets.
article_snippet: concerns that wild populations could dwindle if too many crabs are collected for pets sell for around $25 (£17) each.
article_snippet: The crabs are amphibious, which Lukhaup thinks may explain why The crabs are brightly coloured- because visual cues are important for communicating on land, while chemical cues reign supreme underwater.
highlights_snippet: Traced crustaceans' origins by talking to dealers of the colourful crabs .
  