The Blisterside (Sparisoma chrysopterum) is a saltwater fish of the family Scaridae that grows up to 46 cm.
Coral reefs and seagrass beds of the western Atlantic and the Caribbean.
Description
The redtail parrotfish (Sparisoma chrysopterum) is a parrotfish of the family Scaridae from the western Atlantic and Caribbean. The species has a powerful body and a beak-like mouth of fused teeth with which it scrapes algae and seagrass from the reef. Adult males are greenish with a conspicuous reddish tail. Juveniles and primary-phase fish can rapidly assume a mottled pattern with which they blend into the bottom. The species inhabits coral reefs and adjacent seagrass beds and is a protogynous hermaphrodite, in which fish first function as females and later turn into males.
Frequently asked questions
How do you recognise the Blisterside?
The Blisterside has a torpedo-shaped body, is mainly green and shows a plain pattern. Greenish with a reddish tail; protogynous hermaphrodite that can change its colour pattern quickly. Note: in tropical areas 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 Blisterside live?
The Blisterside lives in the sea (marine waters) and is mostly found around stony or rocky ground. Coral reefs and seagrass beds of the western Atlantic and the Caribbean.
How big does the Blisterside get?
The Blisterside grows to a maximum of about 46 cm. On average the species is around 25 cm.
Is the Blisterside dangerous to humans?
The Blisterside is venomous — handle spines with care and seek medical help after a sting if needed. The fish is harmless to handle. There are reports of ciguatera poisoning after eating it; in case of tingling, nausea, vomiting or reversed hot-cold sensation, seek medical help.
Is the Blisterside edible?
The Blisterside is rarely eaten.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Sparisoma
More from the family Scaridae

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Point your camera at the fish and Fin names the species in seconds. Free, and the Blisterside is one of 12,519 species in the app.