Probarbus jullieni, Isok barb : fisheries, aquaculture, gamefish

Probarbus jullieni Sauvage, 1880

Isok barb
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Probarbus jullieni
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Classificazione / Nomi Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

> Cypriniformes (Carps) > Cyprinidae (Minnows or carps) > Probarbinae
Etymology: Probarbus: Greek, pro = first, in front of + Latin, barbus = barbel (Ref. 45335).
Eponymy: The etymology only helps to the extent that a ‘J Jullien’ collected both holotypes. [...] (Ref. 128868), visit book page.
More on author: Sauvage.

Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione Ecologia

; acqua dolce; salmastro demersale; potamodromo (Ref. 37770). Tropical; 28°N - 5°N

Distribuzione Territories | Aree FAO | Ecosistemi | Presenze | Mappa dei ritrovamenti | Introduzioni | Faunafri

Asia: Mekong, Chao Phraya and Meklong basins of Indo-China and Thailand, and the Pahang and Perak basins of Malaysia (Ref. 7427). Catch, trade and transportation forbidden in Laos (Ref. 12217).

Dimensione / Peso / Età

Maturità: Lm ?  range ? - ? cm
Max length : 150 cm SL maschio/sesso non determinato; (Ref. 30857); common length : 28.0 cm TL maschio/sesso non determinato; (Ref. 2073); peso massimo pubblicato: 70.0 kg (Ref. 12369)

Breve descrizione Chiavi di identificazione | Morfologia | Morfometria

Raggi dorsali molli (totale) : 13; Raggi anali molli: 8. Differs from P. labeamajor in having only 5 (instead of 6) stripes between lateral line scale row and dorsal fin base; lips not enlarged, free posterior margin of lower lip interrupted at midline; large adults without mentum; maxillary barbel invariably well developed, length one-third or more of eye diameter. The only species in which body stripes may extend to every scale row, but this only occurs in some larger and more darkly pigmented individuals. P. labeamajor and P. labeaminor have no more than three stripes below lateral line scale row, and the abdomen is uniformly white. Adults and larger juveniles of P. jullieni usually have much more red and sometimes yellow coloration on head, body, and fins than the other two species. Scale rows between lateral line scale row and pelvic fin 4.
Body shape (shape guide): elongated; Cross section: compressed.

Biologia     Glossario (es. epibenthic)

Inhabits mainly the mainstream of large rivers (Ref. 10431), with sand or gravel substrates and abundant mollusks populations (Ref. 12693). Occurs in deep slow reaches (Ref. 37769). Feeds on aquatic plants, insects and shelled mollusks. Spawns in winter (late December-early February) in big riverine deltas over sand and gravel substrate with water current of 1.3 m/sec (Ref. 6459). Undertakes spawning and trophic migrations in the Mekong basin. Trophic migrations occurs throughout its occurrence range which takes place mainly at the onset of the flood season and are mainly undertaken by juveniles and subadults (Ref. 37770). Upstream spawning migrations take place between October and February from Kompong Cham in Cambodia to Chiang Khong in Thailand. At Chiang Khong , fishermen reported that Probarbus moves up the tributary Nam Ta in Laos to breed in March-April. Three Probarbus species were also reported to migrate together, but spawn separately, in January-February at Sungkom, Nong Khai Province in Thailand (Ref. 37770). Egg is buoyant, yellow and 2 mm in diameter. Hatching occurs in 32 hrs at 23°C (Ref. 6459). An excellent foodfish, sometimes consumed raw, but rather scarce so it fetches a high market price (Ref. 2686). Eggs are especially priced (Ref. 12369). Used to be cultured commercially in Thailand (Ref. 7306). May be caught individually or in small numbers of any size incidentally with gillnetting and other fishing activities, at virtually any time or place in the Mekong mainstream (Ref. 10431), but mostly caught during November-January spawning migration, when it is by far the most important species in fisheries catch (Ref. 12369). In the Mekong this important fisheries species is under serious long-term decline and this decline evidently is basin wide and the most obvious (but not necessarily only) reason is overfishing with gillnets during the reproductive migrations and spawning periods (Ref. 10431). Attains 70 kg or more, but mostly marketed size nowadays are 5-20 kg (Ref. 12369).

Ciclo vitale e comportamento di accoppiamento Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve

Riferimento principale Caricare le referenze | Bibliografia | Coordinatore | Collaboratori

Roberts, T.R., 1992. Revision of the Southeast Asian cyprinid fish genus Probarbus, with two new species threatened by proposed construction of dams on the Mekong River. Ichthyol. Explor. Freshwat. 3(1):37-48. (Ref. 7427)

Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))

  Critically Endangered (CR) (A2d); Date assessed: 29 January 2019

CITES


CMS (Ref. 116361)

Not Evaluated

Minaccia per l'uomo

  Harmless





Usi umani

Pesca: commerciale; Acquacoltura: sperimentale; Pesce da pesca sportiva: si
FAO - Sistemi di acquacoltura: produzione; ; Publication: search | FishSource |

Informazioni ulteriori

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Francobolli, monete, materiale vario.
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Fonti Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Genere, Specie | DiscoverLife | ECOTOX | FAO - Sistemi di acquacoltura: produzione; ; Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | Acquari pubblici | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, ricerca | World Records Freshwater Fishing | Zoobank | Record zoologico

Stime basate su modelli

Indice di diversità filogenetica (Fonte Biblio. 82804):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00468 (0.00189 - 0.01159), b=3.12 (2.90 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Livello trofico (Fonte Biblio. 69278):  3.2   ±0.40 se; based on food items.
Resilienza (Fonte Biblio. 120179):  Molto basso, tempo minimo di raddoppiamento della popolazione più di 14 anni (Preliminary K or Fecundity.).
Vulnerabilità della pesca (Ref. 59153):  Very high vulnerability (90 of 100). 🛈
Categoria di prezzo (Ref. 80766):   Unknown.
Nutrienti (Ref. 124155):  Calcium = 119 [58, 216] mg/100g; Iron = 1.03 [0.59, 1.83] mg/100g; Protein = 17.5 [16.4, 18.5] %; Omega3 = 0.136 [0.063, 0.292] g/100g; Selenium = 68.7 [31.3, 150.8] μg/100g; VitaminA = 15.2 [5.2, 47.7] μg/100g; Zinc = 1.27 [0.87, 1.85] mg/100g (wet weight);