Red Claw Crab (Perisesarma bidens)

Freshwater crabs like this one need less water than you'd think and more land access than most keepers plan for — they're semi-terrestrial by nature and will actively climb out to explore if given the chance. The deep red shell makes it one of the more visually striking freshwater crabs in the trade, but it's still every bit the opportunistic scavenger its genus is known for.

Care level: Easy · Temperament: Aggressive · Max size: ~3" · Min tank: 10 gal, with land access · Diet: Omnivore, scavenger