Florent's Guide To The

Tropical Reefs

Blue-Eyed Rock Crab
Percnon affine
Blue-Eyed Rock Crab
Category: Spray Crabs
Scientific Name: Percnon affine
Size: Up to 3 in. (7.5 cm)  
Depth: 3-15 ft. (1-5 m)
Distribution: Pacific, Hawaii
Arthropoda (Phylum)
└Crustacea (Subphylum)
 └Multicrustacea (Superclass)
  └Malacostraca (Class)
   └Eumalacostraca (Subclass)
    └Eucarida (Superorder)
     └Decapoda (Order)
      └Pleocyemata (Suborder)
       └Brachyura (Infraorder)
        └Grapsoidea (Superfamily)
         └Percnidae (Family)
          └Percnon (Genus)
           └P. affine (Species)

Crustaceans
Spray Crabs

Blue-Eyed Rock Crab

Nimble Spray Crab

Tidal Spray Crab

Green Flat Rock Crab



All Photographs
© 2025 Florent Charpin