Fin's Fish Guide
The Cortez damselfish (Stegastes rectifraenum) is a saltwater fish of the family Pomacentridae that grows up to 14 cm.
Eastern Pacific, mainly the Gulf of California, on rocky coastal reefs.
Description
The Cortez damselfish is a reef damselfish (family Pomacentridae) of the eastern Pacific, mainly the Gulf of California. The species reaches about 13 cm and has a deep, laterally compressed body; adults are dark brown, while juveniles are bright blue with neon spots. It inhabits rocky inshore reefs and is strongly territorial, defending a patch of algae against intruders. It is an omnivore feeding on algae, small invertebrates and detritus. Reproduction occurs in pairs; the eggs adhere to the substrate and the male guards and aerates them. The species is harmless to humans.
Frequently asked questions
How do you recognise the Cortez damselfish?
The Cortez damselfish has a flattened, disc-shaped body, is mainly brown and shows a plain pattern. Strongly territorial; males guard and aerate the eggs attached to the bottom; juveniles bright blue.
Where does the Cortez damselfish live?
The Cortez damselfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Eastern Pacific, mainly the Gulf of California, on rocky coastal reefs.
How big does the Cortez damselfish get?
The Cortez damselfish grows to a maximum of about 14 cm. On average the species is around 8 cm.
Is the Cortez damselfish dangerous to humans?
No, the Cortez damselfish is harmless to humans. None required: this species is harmless to humans.
Is the Cortez damselfish edible?
The Cortez damselfish is not usually eaten.
More photos
Want the complete picture on the Cortez damselfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Cortez damselfish is one of 12,519 species in the app.
All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Stegastes
More from the family Pomacentridae
Want the complete picture on the Cortez damselfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Cortez damselfish is one of 12,519 species in the app.