Florent's Guide To The

Tropical Reefs

Two Horn Box Crab
Calappa bicornis
Two Horn Box Crab
Category: Box Crabs
Scientific Name: Calappa bicornis
Size: Up to 2.5 in. (6.5 cm)  
Depth: 30-200 ft. (10-60 m)
Distribution: Indo-Pacific
Arthropoda (Phylum)
└Crustacea (Subphylum)
 └Malacostraca (Class)
  └Eumalacostraca (Subclass)
   └Decapoda (Order)
    └Pleocyemata (Suborder)
     └Brachyura (Infraorder)
      └Calappidae (Family)
       └Calappa (Genus)

Crustaceans
Box Crabs

Two Horn Box Crab

Giant Box Crab

Flame Box Crab

Rough Box Crab

Yellow Box Crab

Tortuga Box Crab

Shameface Heart Crab



All Photographs
© 2025 Florent Charpin