New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

Diadromous Least Concern 🌡️ Subtropical

Cucumberfish

Retropinna retropinna Richardson, 1848
Max Length
10.6 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
-
Climate
Subtropical
Resilience
High
Vulnerability
22.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Cucumberfish (Retropinna retropinna) is a ray-finned fish of the family Retropinnidae. It inhabits diadromous, migrating between freshwater and the sea waters in benthic environments. This species can reach a maximum total length of 10.6 cm. With a trophic level of 3.2, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Retropinna retropinna
Authority
Richardson, 1848
Habitat
Diadromous
Climate
Subtropical
IUCN Status
LC
Max Length
10.6 cm
Trophic Level
3.2
Resilience
High
Vulnerability
22.00/100
Migration
Anadromous
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Physical description for Cucumberfish is currently being compiled.

🌀 Behaviour

Behavioural data for Cucumberfish is currently being reviewed.

🦐 Diet

Diet information for Cucumberfish is currently being compiled.

🥚 Reproduction

Reproduction data for Cucumberfish is currently being compiled.

🌍 Habitat & Distribution

Marine; freshwater; brackish; demersal; anadromous . Subtropical; 34°S - 47°S Southwest Pacific: endemic to New Zealand.

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish ⬇️ Benthic
Migration
Anadromous
Trophic Level
3.2±0.2

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
10.6cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2014

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
22.00/100
Low vulnerability
Trophic Level
3.2
Predator
Climate Zone
Subtropical
Described By
Richardson, 1848

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Cucumberfish · Estuarine smelt · New Zealand Common Smelt · New Zealand smelt · common smelt
🌍CES koruškovec tažný
🇩🇰Danish Agurkfisk
🌍EST Harilik lõunatint
🇫🇮Finnish Australiankuore
🌍MRI Inanga-papa · Ngaiore · Paraki · Pōrohe
🇷🇺Russian ретропинна обыкновенная
🇨🇳Chinese 後鰭鮭

Scientific Synonyms

Scientific Name Author Year Status
Argentina retropinna Richardson 1848 Synonym
Retropinna abbreviata McDowall 1965 Synonym
Retropinna chathamensis Stokell 1949 Synonym
Retropinna diversa Stokell 1969 Synonym
Retropinna lacustris Stokell 1943 Synonym
Retropinna media Stokell 1969 Synonym
Retropinna obtusirostris Stokell 1941 Synonym
Retropinna osmeroides Meek & Hildebrand 1928 Synonym
Retropinna richardsonii Gill 1862 Synonym
Retropinna richardsonii elongata Klunzinger 1880 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Cucumberfish ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.