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Cynoscion similis  Randall & Cervigón, 1968

Tonkin weakfish
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Cynoscion similis   AquaMaps   Data sources: GBIF OBIS
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Image of Cynoscion similis (Tonkin weakfish)
Cynoscion similis
Picture by JAMARC

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Sciaenidae (Drums or croakers)
Etymology: Cynoscion: Greek, kyon = dog + Greek, odous = teeth + Greek, skion, skiaina = barbel, red mullet (Ref. 45335).   More on author: Randall.

Environment / Climate / Range Ecology

Marine; demersal; depth range 20 - 60 m (Ref. 3702).   Tropical, preferred ?; 12°N - 4°N

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

Western Atlantic: Colombia to northern Brazil. Also reported in Nicaragua (Ref. 13613).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 60.0 cm TL male/unsexed; (Ref. 3702); common length : 40.0 cm TL male/unsexed; (Ref. 3702); max. published weight: 2.0 kg (Ref. 5217)

Short description Morphology | Morphometrics

Dorsal spines (total): 11; Dorsal soft rays (total): 24-29; Anal spines: 2; Anal soft rays: 8 - 10. Silvery grey on back, pale below. Trunk with dotted oblique stripes along scale rows. Inside opercle black, visible externally. Spinous dorsal-fin margin dark. Mouth large, slightly oblique, lower jaw projecting. Upper jaw with a pair of large canine-like teeth at tip. Chin without barbels or pores. Snout with 2 marginal pores. Gas bladder with a pair of straight, horn-like anterior appendages. Soft dorsal fin unscaled except 2 or 3 rows of small scales along its base (Ref 51721).

Biology     Glossary (e.g. epibenthic)

Found over mud and sand bottoms (Ref. 3702). Marketed mostly fresh (Ref. 3702).

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

Main reference Upload your references | References | Coordinator | Collaborators

Cervigón, F., 1993. Los peces marinos de Venezuela. Volume 2. Fundación Científica Los Roques, Caracas,Venezuela. 497 p. (Ref. 9626)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: minor commercial
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00408 - 0.01697), b=3.08 (2.91 - 3.25), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.9   ±0.7 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Moderate vulnerability (36 of 100) .
Price category (Ref. 80766):   Medium.