Florent's Guide To The

South Florida Reefs

Longfin Damselfish
Stegastes diencaeus
Longfin Damselfish
Category: Damselfishes
Scientific Name: Stegastes diencaeus
Size: 3 to 5 in. (8 to 13 cm)  
Depth: 15-80 ft. (5-25 m)
Distribution: Caribbean, Bahamas, Florida, Gulf of America
Chordata (Phylum)
└Osteichthyes (Parvphylum)
 └Actinopterygii (Gigaclass)
  └Actinopteri (Superclass)
   └Teleostei (Class)
    └Ovalentaria (Order)
     └Pomacentridae (Family)
      └Pomacentrinae (Subfamily)
       └Stegastes (Genus)

Small Oval Fishes
Damselfishes

Longfin Damselfish

Longfin Damselfish (Juvenile)

Beaugregory (Juvenile)

Beaugregory

Bicolor Damselfish

Threespot Damselfish

Threespot Damselfish (Juvenile)

Cocoa Damselfish

Sergeant Major

Night Sergeant

Yellowtail Damselfish (Juvenile)

Yellowtail Damselfish

Dusky Damselfish

Dusky Damselfish (Juvenile)



All Photographs
© 2025 Florent Charpin