Florent's Guide To The

Tropical Pacific Reefs

Red Monomia
Monomia petrea
Red Monomia
Category: Swimming Crabs
Scientific Name: Monomia petrea
Distribution: Indo-Pacific
Arthropoda (Phylum)
└Crustacea (Subphylum)
 └Multicrustacea (Superclass)
  └Malacostraca (Class)
   └Eumalacostraca (Subclass)
    └Eucarida (Superorder)
     └Decapoda (Order)
      └Pleocyemata (Suborder)
       └Brachyura (Infraorder)
        └Portunoidea (Superfamily)
         └Portunidae (Family)
          └Portuninae (Subfamily)
           └Monomia (Genus)
            └M. petrea (Species)

Crustaceans
Swimming Crabs

Red Monomia

Blue Swimming Crab

Xenia Swimming Crab

Indo-Pacific Swimming Crab

Charybdis sp. 1

Red Swimming Crab

Hawaiian Swimming Crab

Harlequin Swimming Crab

Sea Cucumber Swimming Crab

Scissor Swimming Crab



All Photographs
© 2026 Florent Charpin