Some 30 percent of decapods — such as shrimps, crabs ... changes and farming, invasive species and disease, climate change and extreme weather were the primary threats to freshwater species.

There’s only one freshwater hermit crab, Clibanarius fonticola, which is native to Vanuatu. Hermit crabs are omnivorous scavengers, eating microscopic mussels and clams, bits of dead animals ...