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Smalleye squaretail (Tetragonurus cuvieri) — Tetragonuridae

Smalleye squaretail

Tetragonurus cuvieri
LC · Least Concern

The Smalleye squaretail (Tetragonurus cuvieri) is a saltwater fish of the family Tetragonuridae that grows up to 70 cm.

Length
70 cm
Water
Saltwater
Depth
1.0–800.0 m
Diet
Carnivore
Behaviour
Large groups
Body shape
Elongated (eel-like)
Substrate
Open water
Danger
Venomous / poisonous
Edibility
Not eaten

Description

Tetragonurus cuvieri is an oceanic fish of the family Tetragonuridae that usually lives near the surface of the open sea. The species has an elongate, robust body with small eyes and hard, keeled scales around the caudal peduncle, and reaches about 70 cm. It feeds mainly on jellyfishes, salps and other soft, gelatinous animals and plankton; young fish often shelter among jellyfishes or inside large salps. The species may occur in schools. There are conflicting reports that the flesh can be poisonous, so consumption is discouraged.

Frequently asked questions

How do you recognise the Smalleye squaretail?

The Smalleye squaretail has an elongate, eel-like body, is mainly brown and shows a plain pattern.

Where does the Smalleye squaretail live?

The Smalleye squaretail lives in the sea (marine waters) and is mostly found around open water.

How big does the Smalleye squaretail get?

The Smalleye squaretail grows to a maximum of about 70 cm.

Is the Smalleye squaretail dangerous to humans?

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

Is the Smalleye squaretail edible?

The Smalleye squaretail is not usually eaten.

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All data

Identification

Dutch name
Kleinoog-vierkantstaart sourced
English name
Smalleye squaretail verified
Scientific name
Tetragonurus cuvieri
Family
Tetragonuridae
Other names
Smalleye squaretail verified

Appearance

Size class
Large verified
Max length (cm)
70.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Terminal inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Open water sourced
Min depth (m)
1.0 verified
Max depth (m)
800.0 verified
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Social behaviour
Large groups inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred

For anglers

Edibility
Not eaten sourced
Fishing method
Sportvissen met kunstaas of (dood/levend) aasvis door te trollen, te werpen of drijvend te vissen in open water. 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

Same genus Tetragonurus

More from the family Tetragonuridae

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