Category: Fishes | Freshwater Fishes | Resource | Threatened fishes

Vulnerable (VU) Freshwater Fishes of Bangladesh

Wallago attu, one of the Vulnerable (VU) Freshwater Fishes of Bangladesh

Wallago attu, one of the Vulnerable (VU) Freshwater Fishes of Bangladesh

A vulnerable (VU) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as facing a high risk of endangerment in the wild. It is the third highest risk category after Critically Endangered (CR) and Endangered (EN) assigned by the IUCN Red List for wild species. .

According to IUCN Bangladesh (2015a, b) two hundred fifty three Freshwater Fishes were assessed by IUCN Bangladesh. Threatened Categories are concerned nearly one fourth (64 species) of the species are under threat, among them 9 (3%) Critically Endangered, 30 (12%) Endangered, and 25 (10%) Vulnerable. This has been followed by 27 (11%) species as Near Threatened. Outside the purview of the Threatened and Near Threatened Categories, there are 122 (48%) species that were assessed as Least Concern and rest of the 40 (16%) as Data Deficient.

Table: Conservation status of Freshwater Fishes of Bangladesh (IUCN Bangladesh (2015a, b))

Categories Number Percentage (%)
Threatened  64 25
Critically Endangered (CR) 09 3
Endangered (EN) 30 12
  Vulnerable (VU)   25   10
Near Threatened (NT)  27 11
Least Concern (LC)  122 48
Data Deficient (DD)  40 16
Total  253 100

 

List of Vulnerable (VU) Freshwater Fishes of Bangladesh (IUCN Bangladesh (2015a, b))

 

1 Amblyceps laticeps
2 Anguilla bengalensis
3 Aspidoparia morar
4 Awaous grammepomus
5 Chagunius chagunio
6 Chela cachius
7 Danio dangila
8 Eugnathogobius oligactis
9 Glyptothorax telchitta
10 Gudusia chapra
11 Labeo ariza
12 Labeo boggut
13 Lepidocephalichthys annadalei
14 Lepidocephalichthys irrorata
15 Microphis cuncalus
16 Microphis deocata
17 Monopterus cuchia
18 Notopterus notopterus
19 Ophisternon bengalense
20 Osteochilus hasseltii
21 Pethia ticto
22 Sicamugil cascasia
23 Sperata aor
24 Sperata seenghala
25 Wallago attu

 

 

NB: Species are classified by the IUCN Red List into nine categories, set through criteria such as rate of decline, population size, area of geographic distribution, and degree of population and distribution fragmentation. The term “Threatened” is a grouping of three categories such as Critically Endangered, Endangered, and Vulnerable.

Categories Criteria
Extinct (EX) No known individuals remaining
Extinct in the wild (EW) Known only to survive in captivity, or as a naturalized population outside its historic range
Threatened
Critically endangered (CR) Extremely high risk of extinction in the wild
Endangered (EN) High risk of extinction in the wild
Vulnerable (VU) High risk of endangerment in the wild
Near threatened (NT) Likely to become endangered in the near future
Least concern (LC) Lowest risk. Does not qualify for a more at-risk category. Widespread and abundant taxa are included in this category
Data deficient (DD) Not enough data to make an assessment of its risk of extinction
Not evaluated (NE) Has not yet been evaluated against the criteria

 

Red List Categories Regional or National Level (Source: IUCN Bangladesh (2015a, b))

Red List Categories Regional or National Level (Source: IUCN Bangladesh (2015a, b))

 

Reference:

  • Froese R and Pauly D (Editors) (2016) FishBase. World Wide Web electronic publication. www.fishbase.org, (10/2016 )
  • IUCN Bangladesh (2015a) Red List of Bangladesh: A Brief on Assessment Result 2015. IUCN, International Union for Conservation of Nature, Bangladesh Country Office, Dhaka, Bangladesh, pp. 24.
  • IUCN Bangladesh (2015b) Red List of Bangladesh Volume 5: Freshwater Fishes. IUCN, International Union for Conservation of Nature, Bangladesh Country Office, Dhaka, Bangladesh, pp xvi+360
  • Rahman AKA (1989) Freshwater fishes of Bangladesh. Zoological Society of Bangladesh, University of Dhaka, Dhaka, Bangladesh. 364 pp.
  • Rahman AKA (2005) Freshwater fishes of Bangladesh, second edition. Zoological Society of Bangladesh, University of Dhaka, Dhaka, Bangladesh. 394 pp.
  • Talwar PK and Jhingran AG (1991) Inland fishes of India and adjacent countries. vol 1 and 2. Oxford IBH Publishing Co Pvt Ltd, New Delhi-Calcutta. pp. 1-542 and 543-1158.

 


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Professor, Department of Fisheries, University of Rajshahi, Rajshahi-6205, Bangladesh. More…

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