Gadopsis bispinosus, Twospine blackfish

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Gadopsis bispinosus Sanger, 1984

Twospine blackfish
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Image of Gadopsis bispinosus (Twospine blackfish)
No image available for this species;
drawing shows typical species in Percichthyidae.

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

> Centrarchiformes (Basses) > Percichthyidae (Temperate perches)
Etymology: Gadopsis: Latin, gadus = a fish, cod? + Greek,opsis = appearance (Ref. 45335).

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

; süßwasser demersal. Temperate; 34°S - 36°S

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

Oceania: endemic to Australia.

Size / Gewicht / Alter

Maturity: Lm ?  range ? - ? cm
Max length : 32.0 cm SL Männchen/unbestimmt; (Ref. 35369)

Kurzbeschreibung Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt): 1 - 3; Rückenflossenweichstrahlen (insgesamt): 35-38; Afterflossenstacheln 3; Afterflossenweichstrahlen: 17 - 20; Wirbelzahl: 46 - 49. Adults are brown to blackish along the sides, with variable mottled or blotched patterns bordered by yellow, and whitish ventrally (Ref. 33616).

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

Occur in cool, clear streams with rocky bottoms in mountain terrain (Ref. 33616); with fast to moderate flow (Ref. 44894). Often abundant at altitudes of 200-700 m (Ref. 33616). Benthic, nocturnally active species which usually occur solitary. Juveniles often found in large groups among leaf litter and wood debris. Movements are restricted to a relatively small stretch of river over the duration of the life span. Occur with G. marmoratus at lower elevations, but they have different habitat preferences. Feed on insect larvae, fishes, fish eggs, earthworms and crustaceans. Breed between October and December. Sexual maturity is attained after 2 years (Ref. 44894). Often caught by recreational fishers targeting trout, although not a desirable target due to its small size (Ref. 33616).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

Male guard the eggs and developing larvae until yolk sac is almost completely resorbed (Ref. 35369).

Hauptreferenz Upload your references | Referenzen | Koordinator : Arratia, Gloria | Partner

Allen, G.R., 1989. Freshwater fishes of Australia. T.F.H. Publications, Inc., Neptune City, New Jersey. (Ref. 5259)

IUCN Rote Liste Status (Ref. 130435)

  Gefährdung zunehmend (NT) (B2b(ii,iii)); Date assessed: 14 February 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless





Nutzung durch Menschen

Fischereien: nicht kommerziell
FAO - Publication: search | FishSource |

Mehr Information

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Ablaichen
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Eier
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Otoliths
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Tools

Zusatzinformationen

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Internet Quellen

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | FishWatcher Einträge suchen | CISTI | Catalog of Fishes: Gattung, Arten | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: Genom, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Gehe zu, Suchen | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01072 (0.00408 - 0.02815), b=3.01 (2.79 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.6   ±0.50 se; based on food items.
Widerstandsfähigkeit (Ref. 120179):  mittel, Verdopplung der Population dauert 1,4 - 4,4 Jahre. (Fec=120-320).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (29 of 100).