Home · Ostraciidae · Shell fish
Shell fish (Lactophrys triqueter) — Ostraciidae

Shell fish

Lactophrys triqueter
Family: Ostraciidae
LC · Least Concern

The Shell fish (Lactophrys triqueter) is a saltwater fish of the family Ostraciidae that grows up to 47 cm.

Length
47 cm
Water
Saltwater
Depth
0–50.0 m
Diet
Carnivore
Behaviour
Solitary
Body shape
Flat / disc-shaped
Substrate
Stone or rock
Danger
Venomous / poisonous
Range
Western Atlantic and Caribbean; coral reefs.
Edibility
Rarely eaten

Want the complete picture on the Shell fish?

Get the app

Description

The smooth trunkfish is a boxfish of the family Ostraciidae from the western Atlantic and Caribbean. The species grows to about 47 cm and has a triangular body armoured with bony plates that gives a rigid, box-like shape, dark with white spots. It lives solitarily or in small groups on coral reefs. With a jet of water ejected from its mouth it blows small bottom animals such as molluscs, crustaceans, worms, tunicates and sponges out of the sediment. When stressed the skin secretes a toxin. The species is marketed fresh locally.

Frequently asked questions

How do you recognise the Shell fish?

The Shell fish has a flattened, disc-shaped body, is mainly brown and shows a spots pattern. Box-shaped body armoured with bony plates; blows prey out of the sand with a jet of water and secretes a toxin when stressed.

Where does the Shell fish live?

The Shell fish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Western Atlantic and Caribbean; coral reefs.

How big does the Shell fish get?

The Shell fish grows to a maximum of about 47 cm. On average the species is around 20 cm.

Is the Shell fish dangerous to humans?

The Shell fish is venomous — handle spines with care and seek medical help after a sting if needed. None required: this species is harmless to humans.

Is the Shell fish edible?

The Shell fish is rarely eaten.

More photos

Shell fish (Lactophrys triqueter) — Ostraciidae — 2
Wikimedia Commons — LASZLO ILYES from Cleveland, Ohio, USA (CC BY 2.0)
Shell fish (Lactophrys triqueter) — Ostraciidae — 3
Wikimedia Commons — LASZLO ILYES from Cleveland, Ohio, USA (CC BY 2.0)
Shell fish (Lactophrys triqueter) — Ostraciidae — 4
Wikimedia Commons — Becky A. Dayhuff, Environmental Educator (Public domain)
Shell fish (Lactophrys triqueter) — Ostraciidae — 5
iNaturalist ((c) sunfriedegg, some rights reserved (CC BY-NC))
Fin

Want the complete picture on the Shell fish?

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

Get the app →

All data

Identification

English name
Shell fish verified
Scientific name
Lactophrys triqueter
Family
Ostraciidae
Other names
Smooth trunkfish; Smooth Trunkfish; Spotted trunkfish; Trunkfish verified

Appearance

Size class
Large verified
Max length (cm)
47.0 verified
Average length (cm)
20.0 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Brown inferred
Pattern
Spots inferred
Tail shape
Rounded inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
No sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Max depth (m)
50.0 verified
Natural range
Western Atlantic and Caribbean; coral reefs. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Molluscs, crustaceans, worms, tunicates and sponges sourced
Social behaviour
Solitary 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
Box-shaped body armoured with bony plates; blows prey out of the sand with a jet of water and secretes a toxin when stressed. sourced

For anglers

Edibility
Rarely 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
None required: this species is harmless to humans. sourced

Status & sources

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

Same genus Lactophrys

More from the family Ostraciidae

Fin

Want the complete picture on the Shell fish?

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

Get the app →
Is this the Shell fish? Get the app