Scientific name - Ciliopagurus strigatus Family – Diogenidae Common name – Halloween Hermit Crabs Max Size – 3 in (5.5 cm) Range: Hawaii Care Level – Easy Temperament – Peaceful Foods and feeding – This crab will scavenge debris and algae but can be feed small meaty items and algae sheets. Aquarium suitability - Reef compatibility – Yes Captive care – This crab is extremely helpful in keeping an aquarium clean, and will roam the aquarium searching for debris and algae to eat. They may kill snails for their shells so provide empty shells for them to move into as they grow. This is one of the larger hermit crabs available and can move rockwork around. Crabs are extremely sensitive to nitrates and copper and small amounts will kill them.