Fin's Fish Guide
The Blue-tailed cod (Epinephelus polyphekadion) is a saltwater fish of the family Serranidae that grows up to 90 cm.
Description
The camouflage grouper is a large grouper of the family Serranidae from the Indo-Pacific. The species grows to about 90 cm and has a stocky, brown-mottled body with dark blotches and a dark saddle on the tail base, camouflaging it excellently on the reef. It is often found in coral-rich parts of lagoon and outer reefs and in caves. As an ambush predator it feeds on fishes and crustaceans. The species forms large spawning aggregations, making it vulnerable to overfishing; it is listed as Vulnerable (VU) and is a protogynous hermaphrodite. Large reef specimens can contain ciguatera; do not eat those.
Frequently asked questions
How do you recognise the Blue-tailed cod?
The Blue-tailed cod has a torpedo-shaped body, is mainly brown and shows a marbled pattern. Excellently camouflaged; forms large spawning aggregations, vulnerable (VU) and a protogynous hermaphrodite. Note: in tropical regions this species can cause ciguatera poisoning when eaten; large specimens of coral reef predators can accumulate the toxin. Eat with caution or avoid in risk areas.
Where does the Blue-tailed cod live?
The Blue-tailed cod lives in the sea (marine waters) and is mostly found around stony or rocky ground. Indo-Pacific; coral-rich parts of lagoon and outer reefs and caves.
How big does the Blue-tailed cod get?
The Blue-tailed cod grows to a maximum of about 90 cm. On average the species is around 90 cm.
Is the Blue-tailed cod dangerous to humans?
The Blue-tailed cod is venomous — handle spines with care and seek medical help after a sting if needed. The flesh can contain ciguatera in tropical areas; do not eat large reef specimens from risk areas. In case of poisoning (tingling, gastrointestinal symptoms, temperature-reversal sensation), seek medical care.
Is the Blue-tailed cod edible?
Yes, the Blue-tailed cod is commonly eaten.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Epinephelus
More from the family Serranidae
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Point your camera at the fish and Fin names the species in seconds. Free, and the Blue-tailed cod is one of 12,519 species in the app.