Eleutheronema rhadinum, East Asian fourfinger threadfin

Eleutheronema rhadinum (Jordan & Evermann, 1902)

East Asian fourfinger threadfin
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Eleutheronema rhadinum   AquaMaps   Data sources: GBIF OBIS
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Image of Eleutheronema rhadinum (East Asian fourfinger threadfin)
Eleutheronema rhadinum
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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Carangaria/misc (Various families in series Carangaria) > Polynemidae (Threadfins)
Etymology: Eleutheronema: Greek, eleutheros = free + Greek, nema = filament (Ref. 45335).
More on authors: Jordan & Evermann.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; brackish; pelagic-neritic; depth range 5 - 8 m (Ref. 41639). Temperate; 42°N - 15°N, 105°E - 142°E (Ref. 57343)

Distribution Territories | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Northwest Pacific: China, Japan and Viet Nam. Not reported from the vicinity of oceanic islands.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 73.9 cm SL male/unsexed; (Ref. 41639)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 9; Dorsal soft rays (total): 13 - 15; Anal spines: 3; Anal soft rays: 14 - 16. Pectoral filaments 4; fin membranes black. Vomer with deciduous tooth plates on both sides. Posterior part of maxilla deep, 3% of SL. Short tooth plate extension onto lateral surface of lower jaw, 8-9% SL (Ref. 41639).
Body shape (shape guide): elongated; Cross section: compressed.

Biology     Glossary (e.g. epibenthic)

Found in shallow coastal waters and estuaries (Ref. 125475).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Motomura, H., Y. Iwatsuki, S. Kimura and T. Yoshino, 2002. Revision of the Indo-West Pacific polynemid fish genus Eleutheronema (Teleostei: Perciformes). Ichthyol. Res. 49(1):47-61. (Ref. 41639)

IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))

Not Evaluated 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | National databases | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index
(Ref. 82804) 		PD50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00537 (0.00262 - 0.01101), b=3.06 (2.88 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level
(Ref. 69278) 		3.8   ±0.4 se; based on size and trophs of closest relatives
Resilience
(Ref. 120179) 		Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability
(Ref. 59153) 		Moderate to high vulnerability (46 of 100). 🛈
Nutrients
(Ref. 124155) 		Calcium = 25.2 [7.2, 77.1] mg/100g; Iron = 0.291 [0.104, 0.790] mg/100g; Protein = 20.4 [18.4, 22.2] %; Omega3 = 0.354 [0.175, 0.703] g/100g; Selenium = 7.44 [1.68, 27.02] μg/100g; VitaminA = 11.1 [3.3, 39.4] μg/100g; Zinc = 0.632 [0.295, 1.274] mg/100g (wet weight);