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🌊 Marine Least Concern 🌡️ Subtropical

Atlantic threadfin

Polydactylus octonemus Girard, 1858
Max Length
33 cm
Max Weight
-
Lifespan
-
Trophic Level
3.6
Depth
5–66 m
Climate
Subtropical
Resilience
High
Vulnerability
21.00/100
Typical Length
25 cm
Depth Zone
demersal

📖 Overview

Atlantic threadfin (Polydactylus octonemus) is a ray-finned fish of the family Polynemidae. It inhabits marine (saltwater) waters in benthic environments. This species can reach a maximum total length of 33 cm. It occurs at depths between 5 and 66 metres. With a trophic level of 3.6, it is a mid-level predator. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Polydactylus octonemus
Authority
Girard, 1858
Habitat
Marine
Climate
Subtropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
33 cm
Depth Range
5–66 m
Trophic Level
3.6
Resilience
High
Vulnerability
21.00/100
Salinity
30–40 ppt

🐟 Physical Description

: fusiform / normal.

🌀 Behaviour

Behavioural data for Atlantic threadfin is currently being reviewed.

🦐 Diet

Diet information for Atlantic threadfin is currently being compiled.

🥚 Reproduction

Size at Maturity
19cm TL

🌍 Habitat & Distribution

Marine; demersal; depth range 5 - 66 m , usually 5 - 16 m . Subtropical; 42°N - 18°N, 98°W - 71°E South America (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.6±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00407 × L3.07 (TL)
Max TL
33cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2015

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
21.00/100
Low vulnerability
Trophic Level
3.6
Predator
Body Shape
Fusiform / normal
Climate Zone
Subtropical
Described By
Girard, 1858

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Polynemus octonemus Girard 1858 Synonym
Trichidion octofilis Gill 1861 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 20 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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View all observations for Atlantic threadfin ↗
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