Longfin Damselfish
Stegastes diencaeus
- Class
- Ray-finned fish
- Rarity
- Common
- Observations
- 840
- Most observed in
- 🇧🇶 Caribbean Netherlands
- Conservation
- Least Concern
Description
Stegastes diencaeus, the longfin damselfish, is a damselfish in the family Pomacentridae from the Western Atlantic. It occasionally makes its way into the aquarium trade. It grows to a size of 12.5 cm in length. Longfin damselfish have been reported to have a mutualistic relationship with mysid shrimp of the species Mysidium integrum. The interaction is described as a form of domestication with the shrimp providing nutrients for the algae farms the fish feed on and the fish providing protection from predators.
Summary adapted from the Wikipedia article “Stegastes diencaeus”.