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Smooth alligatorfish (Anoplagonus inermis) — Agonidae

Smooth alligatorfish

Anoplagonus inermis
Family: Agonidae
NE · Not Evaluated

The Smooth alligatorfish (Anoplagonus inermis) is a saltwater fish of the family Agonidae that grows up to 15 cm.

Length
15 cm
Water
Saltwater
Depth
8.0–102.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Range
North Pacific
Edibility
Not eaten

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Description

The smooth alligatorfish is a small poacher from the cold waters of the northern Pacific. The species grows to about 15 cm and has an elongate, angular body armoured with bony plates but, unlike many relatives, almost without spines, hence 'smooth'. As a slow bottom-dweller it lives on sand and gravel bottoms of shallow coastal water to about 100 metres and searches for small crustaceans and worms. The fish is harmless to humans and has no commercial value. The IUCN has not evaluated the species.

Frequently asked questions

How do you recognise the Smooth alligatorfish?

The Smooth alligatorfish has an elongate, eel-like body, is mainly brown and shows a plain pattern. Bony armoured but almost spineless body; slow bottom-living armoured gurnard

Where does the Smooth alligatorfish live?

The Smooth alligatorfish lives in the sea (marine waters) and is mostly found around sand or mud bottom. North Pacific

How big does the Smooth alligatorfish get?

The Smooth alligatorfish grows to a maximum of about 15 cm.

Is the Smooth alligatorfish dangerous to humans?

No, the Smooth alligatorfish is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.

Is the Smooth alligatorfish edible?

The Smooth alligatorfish is not usually eaten.

More photos

Smooth alligatorfish (Anoplagonus inermis) — Agonidae — 2
iNaturalist ((c) Erin McKittrick, some rights reserved (CC BY))
Smooth alligatorfish (Anoplagonus inermis) — Agonidae — 3
Wikimedia Commons — Erin McKittrick (CC BY 4.0)
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All data

Identification

English name
Smooth alligatorfish verified
Scientific name
Anoplagonus inermis
Family
Agonidae
Other names
Smooth alligatorfish; Smooth poacher; Smooth sea-poacher verified

Appearance

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

Habitat & distribution

Water type
Saltwater sourced
Substrate
Sand / mud bottom sourced
Min depth (m)
8.0 verified
Max depth (m)
102.0 verified
Natural range
North Pacific verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Small crustaceans and worms inferred
Social behaviour
Solitary sourced
Territorial
No sourced
Activity
Nocturnal sourced
Reproduction
Separate sexes sourced
Sexual dimorphism
No sourced
Seasonality
Slow armoured bottom gurnards; present year-round. sourced
Special features
Bony armoured but almost spineless body; slow bottom-living armoured gurnard sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Not a target species for angling; at most an incidental catch or usable as baitfish. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
First aid
This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status. verified

Status & sources

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

More from the family Agonidae

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