Fin's Fish Guide
The Bluespotted spinefoot (Siganus javus) is a brackish-water fish of the family Siganidae that grows up to 53 cm.
Description
The streaked spinefoot is a rabbitfish (Siganidae) from the Indo-West Pacific. The species has an oval body with a fine network of pale lines and spots on a dark background and a small, rabbit-like mouth. It forms small schools in shallow coastal waters, brackish lagoons and river mouths. As a plant-eating fish it grazes algae and seaweed. The dorsal, pelvic and anal fin spines are venomous; a sting is very painful.
Frequently asked questions
How do you recognise the Bluespotted spinefoot?
The Bluespotted spinefoot has a flattened, disc-shaped body, is mainly brown and shows a spots pattern. Fine network of pale lines; algae-grazing rabbitfish with venomous fin spines.
Where does the Bluespotted spinefoot live?
The Bluespotted spinefoot lives in brackish water and is mostly found around stony or rocky ground. Indo-West Pacific; shallow coastal waters and brackish lagoons.
How big does the Bluespotted spinefoot get?
The Bluespotted spinefoot grows to a maximum of about 53 cm. On average the species is around 30 cm.
Is the Bluespotted spinefoot dangerous to humans?
The Bluespotted spinefoot is venomous — handle spines with care and seek medical help after a sting if needed. If stung by a fin spine: immerse the affected part in water as hot as can be tolerated (about 45 degrees C) to break down the venom, and seek medical care for severe or persistent symptoms.
Is the Bluespotted spinefoot edible?
Yes, the Bluespotted spinefoot is commonly eaten.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Siganus
More from the family Siganidae
Want the complete picture on the Bluespotted spinefoot?
Point your camera at the fish and Fin names the species in seconds. Free, and the Bluespotted spinefoot is one of 12,519 species in the app.