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Shortnose boxfish (Rhynchostracion nasus) — Ostraciidae

Shortnose boxfish

Rhynchostracion nasus
Family: Ostraciidae
LC · Least Concern

The Shortnose boxfish (Rhynchostracion nasus) is a saltwater fish of the family Ostraciidae that grows up to 30 cm.

Length
30 cm
Water
Saltwater
Depth
2.0–80.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Diurnal
Body shape
Flat / disc-shaped
Substrate
Stone or rock
Danger
Venomous / poisonous
Edibility
Not eaten

Description

The shortnose boxfish is a boxfish from the western Pacific, ranging from Sri Lanka and Sumatra to Fiji and the Philippines. The species grows to about 30 cm and has a box-shaped body encased in a bony carapace, with a small protuberance above the mouth and a concave snout profile. It lives on rocky and sandy reef bottoms between 2 and 80 metres depth, usually solitary. When stressed the skin secretes a toxin (ostracitoxin) that can kill other fish; the flesh is also poisonous and inedible. The IUCN assesses the species as Least Concern (LC).

Frequently asked questions

How do you recognise the Shortnose boxfish?

The Shortnose boxfish has a flattened, disc-shaped body, is mainly yellow-gold and shows a spots pattern.

Where does the Shortnose boxfish live?

The Shortnose boxfish lives in the sea (marine waters) and is mostly found around stony or rocky ground.

How big does the Shortnose boxfish get?

The Shortnose boxfish grows to a maximum of about 30 cm.

Is the Shortnose boxfish dangerous to humans?

The Shortnose boxfish is venomous — handle spines with care and seek medical help after a sting if needed.

Is the Shortnose boxfish edible?

The Shortnose boxfish is not usually eaten.

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All data

Identification

Dutch name
Kortsnuit-koffervis verified
English name
Shortnose boxfish verified
Scientific name
Rhynchostracion nasus
Family
Ostraciidae
Other names
Cowfish; Shortnose boxfish; Small-nosed boxfish verified

Appearance

Size class
Medium verified
Max length (cm)
30.0 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Yellow / gold inferred
Pattern
Spots inferred
Tail shape
Rounded inferred
Mouth position
Terminal sourced
Lips
Thin sourced
Barbels
No sourced
Dorsal fins
One continuous sourced
Dorsal spines
No sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
2.0 verified
Max depth (m)
80.0 verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore inferred
Social behaviour
Solitary inferred
Territorial
No sourced
Activity
Diurnal sourced
Reproduction
Separate sexes sourced
Sexual dimorphism
No sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Vissen met natuurlijk aas (vis, garnaal, worm) of kunstaas dicht bij rif- en rotsstructuren. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Venomous / poisonous sourced

Status & sources

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

More from the family Ostraciidae

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