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Pseudoscaphirhynchus hermanni (Kessler, 1877)

Dwarf sturgeon
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Pseudoscaphirhynchus hermanni
Female picture by Salnikov, V.B.


Afghanistan country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Mouths of Amu Darya upriver to Termez on the Afghan border with Uzbekistan (Ref. 39701).
National Checklist:
Country Information: https://www.cia.gov/library/publications/the-world-factbook/geos/af.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Coad, B.W., 1981
National Database:

Common names from other countries

Classification / Names ຊື່ສາມັນ | ຄຳສັບຄ້າຍຄືກັນ | Catalog of Fishes(ຕະກຸນ, ຊະນິດ) | ITIS | CoL | WoRMS | Cloffa

> Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons) > Acipenserinae
Etymology: Pseudoscaphirhynchus: Greek, pseudes = false + Greek, skaphe = boat + Greek, rhyngchos = snout (Ref. 45335).

Issue
Species of the genus Pseudoscaphirhynchus belong to the subfamily Acipenserinae, and not Scaphirhynchinae as it was previously considered (V. Birstein, pers. comm. 03/05 ).

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

; ນ້ຳຈືດ; ນ້ຳກ່ອຍ ອາໄສຢູ່ໃກ້ໜ້າດິນໃຕ້ພື້ນທ້ອງນ້ຳ; ກຸ່ມຫຼືຊະນິດປາທີ່ມີການເຄື່ອນຍ້າຍພາຍໃນນ້ຳຈືດ (Ref. 51243).   Temperate

ການແຜ່ກະຈາຍ ປະເທດ | ເຂດ FAO | ລະບົບນິເວດ | ການປະກົດຕົວ | Point map | ການແນະນຳ | Faunafri

Former USSR and Asia: Endemic to the basin of Amu Dariya and Sir Dariya rivers. Registered in the 1984 USSR Red Book; 1985 Turkmen SSR Red Data Book; 1996 IUCN Red List (Ref. 35930).

ຂະໜາດ / ນ້ຳໜັກ / Age

Maturity: Lm ?  range ? - ? cm
Max length : 27.5 cm TL ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 35930); ນ້ຳໜັກສູງສຸດທີ່ເຄຍຈັດພີມມາ: 50.50 g (Ref. 35930); ອາຍຸສູງສຸດທີ່ເຄຍລາຍງານມາ: 6 ປີ (Ref. 35930)

ຊີວະສາດ     ຄຳແປສັບ (ຕ.ຢ. epibenthic)

A rare and endangered species; smallest sturgeon; sensitive to chemicals in the water Ref. 35930).

Life cycle and mating behavior Maturities | ການສືບພັນ | Spawnings | Egg(s) | Fecundities | ຕົວອ່ອນ

Main reference Upload your references | ເອກະສານອ້າງອີງ | ຜູ້ປະສານງານ | ຜູ້ຮ່ວມມື

Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991. World fishes important to North Americans. Exclusive of species from the continental waters of the United States and Canada. Am. Fish. Soc. Spec. Publ. (21):243 p. (Ref. 4537)

IUCN Red List Status (Ref. 130435)

  Critically Endangered (CR) (A2c); Date assessed: 14 September 2019

CITES (Ref. 128078)


Threat to humans

  Harmless




Human uses

ການປະມົງ: ທີ່ບໍ່ມີຄວາມສົນໃຈ
FAO(ການປະມົງ: species profile; publication : search) | FishSource |

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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=0.00331 (0.00148 - 0.00739), b=3.16 (2.98 - 3.34), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
ຊັ້ນເຂດຮ້ອນ (Ref. 69278):  3.2   ±0.5 se; based on size and trophs of closest relatives
ຄວາມຢືດຢຸ່ນ (Ref. 120179):  ຂະໜາດກາງ, ປະຊາກອນຕຳ່ສຸດທີ່ໃຊ້ເວລາສອງເທົ່າ 1.4 - 4.4 ປີ (tmax=6).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (18 of 100).