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Black spinefoot (Siganus spinus) — Siganidae

Black spinefoot

Siganus spinus
Family: Siganidae
LC · Least Concern

The Black spinefoot (Siganus spinus) is a saltwater fish of the family Siganidae that grows up to 28 cm.

Length
28 cm
Water
Saltwater
Depth
1.0–50.0 m
Diet
Herbivore
Behaviour
Schooling
Body shape
Torpedo-shaped
Substrate
Stone or rock
Danger
Venomous / poisonous
Range
Indo-Pacific; shallow coral reef flats, also in rivers.
Edibility
Commonly eaten

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Description

The little spinefoot is a rabbitfish of the family Siganidae from the Indo-Pacific. The species grows to about 28 cm and has a deep, laterally compressed body with a fine marbled pattern that provides camouflage. Adults inhabit shallow coral reef flats and also enter rivers; they occur in small schools of usually fewer than ten individuals. As a herbivore it grazes algae from the reef. The dorsal, pelvic and anal spines are venomous and can give a painful puncture wound, so handle the fish with care. The little spinefoot is eaten locally.

Frequently asked questions

How do you recognise the Black spinefoot?

The Black spinefoot has a torpedo-shaped body, is mainly brown and shows a marbled pattern. Finely marbled, deep body; venomous dorsal, pelvic and anal fin spines.

Where does the Black spinefoot live?

The Black spinefoot lives in the sea (marine waters) and is mostly found around stony or rocky ground. Indo-Pacific; shallow coral reef flats, also in rivers.

How big does the Black spinefoot get?

The Black spinefoot grows to a maximum of about 28 cm. On average the species is around 18 cm.

Is the Black spinefoot dangerous to humans?

The Black spinefoot is venomous — handle spines with care and seek medical help after a sting if needed. The fin spines are venomous and a prick causes severe, burning pain. Immerse the wound for 30-90 minutes in water as hot as can be tolerated (about 45 C) and seek medical care if pain or infection persists.

Is the Black spinefoot edible?

Yes, the Black spinefoot is commonly eaten.

More photos

Black spinefoot (Siganus spinus) — Siganidae — 2
iNaturalist ((c) cmmteixeira, some rights reserved (CC BY-NC))
Black spinefoot (Siganus spinus) — Siganidae — 3
iNaturalist ((c) Pierre Pericard, some rights reserved (CC BY))
Black spinefoot (Siganus spinus) — Siganidae — 4
Wikimedia Commons — David Burdick (Public domain)
Black spinefoot (Siganus spinus) — Siganidae — 5
iNaturalist ((c) Nico K. Michiels, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Black spinefoot verified
Scientific name
Siganus spinus
Family
Siganidae
Other names
Black trevally; Blue-spotted trevally; Bluntnosed spinefoot; Blunt-nosed spinefoot; Little spinefoot; Scribbled rabbitfish; Spiny rabbitfish; Happy moments; Marbled-spine foot; Mi-mi; Rabbitfish; Scribbled rabbit-fish verified

Appearance

Size class
Medium verified
Max length (cm)
28.0 verified
Average length (cm)
18.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Brown inferred
Pattern
Marbled inferred
Tail shape
Forked inferred
Mouth position
Inferior (downward) inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
1.0 verified
Max depth (m)
50.0 verified
Natural range
Indo-Pacific; shallow coral reef flats, also in rivers. inferred
Origin
Native sourced

Behaviour & biology

Diet
Herbivore sourced
Diet (detail)
Algae from the reef sourced
Social behaviour
Schooling inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Finely marbled, deep body; venomous dorsal, pelvic and anal fin spines. sourced

For anglers

Edibility
Commonly eaten sourced
Fishing method
Fishing with natural bait (fish, shrimp, worm) or lures close to reef and rock structures. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Venomous / poisonous sourced
First aid
The fin spines are venomous and a prick causes severe, burning pain. Immerse the wound for 30-90 minutes in water as hot as can be tolerated (about 45 C) and seek medical care if pain or infection persists. sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Siganus

More from the family Siganidae

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