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New Zealand common smelt (Retropinna retropinna) — Retropinnidae

New Zealand common smelt

Retropinna retropinna
Family: Retropinnidae

The New Zealand common smelt (Retropinna retropinna) is a fish that lives in both fresh and salt water of the family Retropinnidae that grows up to 9 cm.

Length
8.6 cm
Water
Euryhaline
Behaviour
Schooling
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Range
Oceania: New Zealand

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Description

The New Zealand common smelt is a smelt (Retropinnidae) from cool fresh and brackish water of waters around New Zealand. The species grows to about 8 cm and has a slender, translucent, silvery body with an adipose fin and a characteristic cucumber-like smell. As a schooling fish it swims in clear rivers, lakes and estuaries and eats small zooplankton and insect larvae. The fish is harmless to humans.

Frequently asked questions

How do you recognise the New Zealand common smelt?

The New Zealand common smelt has an elongate, eel-like body and is mainly silver-grey.

Where does the New Zealand common smelt live?

The New Zealand common smelt lives in both fresh and salt water and is mostly found around sand or mud bottom. Oceania: New Zealand

How big does the New Zealand common smelt get?

The New Zealand common smelt grows to a maximum of about 9 cm.

Is the New Zealand common smelt dangerous to humans?

No, the New Zealand common smelt 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.

More photos

New Zealand common smelt (Retropinna retropinna) — Retropinnidae — 2
iNaturalist ((c) Mike Lusk, some rights reserved (CC BY-NC))
New Zealand common smelt (Retropinna retropinna) — Retropinnidae — 3
iNaturalist ((c) Caiden, some rights reserved (CC BY-NC))
New Zealand common smelt (Retropinna retropinna) — Retropinnidae — 4
Hubert Szczygieł (CC BY-NC 4.0) via GBIF — iNaturalist
New Zealand common smelt (Retropinna retropinna) — Retropinnidae — 5
Wikimedia Commons — Internet Archive Book Images (No restrictions)
Fin

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All data

Identification

English name
New Zealand common smelt sourced
Scientific name
Retropinna retropinna
Family
Retropinnidae
Other names
Common smelt; Cucumberfish; Estuarine smelt; Smelt verified

Appearance

Size class
Small verified
Max length (cm)
8.6 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Silver / grey sourced
Tail shape
Forked inferred

Habitat & distribution

Water type
Euryhaline sourced
Substrate
Sand / mud bottom sourced
Natural range
Oceania: New Zealand sourced
Origin
Native inferred

Behaviour & biology

Social behaviour
Schooling sourced
Territorial
No inferred
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred

For anglers

Fishing method
Small in size and barely an angling target; mostly caught incidentally or as baitfish. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified
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

Same genus Retropinna

More from the family Retropinnidae

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