Florent's Guide To The

Tropical Reefs

Blackbar Chromis
Pycnochromis retrofasciatus
Blackbar Chromis
Category: Chromis
Scientific Name: Pycnochromis retrofasciatus
Synonyms: Chromis retrofasciata
Size: Up to 2 in. (5 cm)  
Distribution: Indonesia, Philippines, Micronesia, Papua New Guinea, Solomon Islands, Great Barrier Reef, Fiji
Chordata (Phylum)
└Vertebrata (Subphylum)
 └Osteichthyes (Parvphylum)
  └Actinopterygii (Gigaclass)
   └Actinopteri (Superclass)
    └Teleostei (Class)
     └Ovalentaria (Order)
      └Pomacentridae (Family)
       └Chrominae (Subfamily)
        └Pycnochromis (Genus)
         └P. retrofasciatus (Species)

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© 2026 Florent Charpin