Species name: Paguristes cadenati
Common names: Scarlet Hermit Crab, Red-leg Hermit Crab, red reef hermit crab
Family: Diogenidae (left-handed hermit crabs)
Order: Decapoda (lobster, shrimp and crabs)
Class: Malacostraca
Maximum length: 1 1/2 in.
Minimum tank size: 5 gallons

Species name: Mithrax sculptus
Common names: Emerald Mythrax Crab, Green Emerald Crab, Green Crab, Emerald Crab
Family: Mithracidae
Order: Decapoda (lobster, shrimp and crabs)
Class: Malacostraca
Maximum length: 3 in.
Minimum tank size: 10 gallons

Species name: Neopetrolisthes ohshimai
Common names: Porcelain crab, Anemone Crabs, dotted anemone crab
Family: Porcellanidae
Order: Decapoda
Class: Crustacea
Maximum length: 1.0 inch
Minimum tank size: 5 gallons

Species name: Stenorhynchus seticornis
Common names: Arrow crab, Yellowline Arrow Crab, Spider crab
Family: Inachidae
Order: Decapoda
Class: Malacostraca
Maximum length: 6 in.

Species name: Dardanus pedunculatus
Common names: Anemone hermit crab, Anemone-Carrying Hermit Crab
Family: Diogenidae
Subfamily:
Order: Decapoda
Class: Malacostraca
Maximum length: 4 in.