Please list all invertebrates that are deemed as suitable for beginners, explain what their basic needs / requirements are. Please, if possible, use the following format... Blue Legged Dwarf Hermit Crab Care Level: Easy Tank Conditions: 72-78°F; sg 1.023-1.025; pH 8.1-8.4; dKH 8-12 Max. Size In Aquarium: Up to 1" Color Form: Blue, Red Temperament: Peaceful Reef Compatible: Yes Diet: Omnivore Origin: Caribbean Family: Diogenidae A great hermit crab to have in reef aquariums. They eat a variety of nuisance algae like green hair algae and cyanobacteria. The crab is blue and lives in abandoned snail shells. When molting they will outgrow the snail shell and will require a new home. If an empty shell is not available it will kill another hermit or snail for its shell.