Category: Fishes | Resource | Threatened fishes

Critically Endangered (CR) Freshwater Fishes of Bangladesh

Bagarius bagarius, one of the critically endangered (CR) freshwater fishes of bangladesh

Bagarius bagarius, one of the critically endangered (CR) freshwater fishes of Bangladesh [Photo by Sharmin Siddique Bhuiyan]

A critically endangered (CR) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as facing a very high risk of extinction in the wild. It is the highest risk category 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 Critically Endangered Fresheater Fishes of Bangladesh (IUCN Bangladesh (2015a, b))

  1. Bagarius bagarius
  2. Channa barca
  3. Labeo boga
  4. Labeo nandina
  5. Nemacheilus corica [Schistura corica]
  6. Neoeucirrhichthys maydelli
  7. Ompok pabo
  8. Sisor rabdophorus
  9. Tor tor

 

Details are given bellow-

1. Bagarius bagarius

Bagarius bagarius

Bagarius bagarius

 

Common Name Bagair, Baghair, Gangetic goonch, Goonch, বাগাইর
Taxonomic Position  Actinopterygii (ray-finned fishes), Siluriformes (Catfish), Sisoridae (Sisorid catfishes), Sisorinae
Habitat  Freshwater; brackish; benthopelagic; pH range 6.5 – 7.8; dH range12 – 30; potamodromous
Geographical Distribution Bangladesh, India, Laos, Thailand
Recorded Max Length  200 cm TL male/unsexed
Global Conservation Status  Near Threatened (NT)
Economic Impotence Minor commercial, Game fish

 

2. Channa barca

Channa barca

Channa barca

 

Common Name Barca snakehead, Pipla, Tilashol, তিলাশোল
Taxonomic Position Actinopterygii (ray-finned fishes), Perciformes (Perch-likes), Channidae (Snakeheads)
Habit and Habitat  Freshwater; benthopelagic; potamodromous
Geographical Distribution Bangladesh, India
Recorded Max Length 105 cm TL male/unsexed
Global Conservation Status Data deficient (DD)
Economic Impotence Minor commercial

 

3. Labeo boga

Labeo boga

Labeo boga

 

Common Name Bhangan, Bhangan bata, ভাঙ্গন, ভাঙ্গন বাটা
Taxonomic Position Actinopterygii (ray-finned fishes), Cypriniformes (Carps), Cyprinidae (Minnows or carps), Labeoninae
Habit and Habitat Freshwater; benthopelagic; potamodromous
Geographical Distribution Bangladesh, India, Pakistan, Nepal, Myanmar.
Recorded Max Length 30.0 cm TL male/unsexed
Global Conservation Status Least Concern (LC)
Economic Impotence Unknown

 

4. Labeo nandina

Labeo nandina

Labeo nandina

 

Common Name Nandil, Nandina, নান্দিনা
Taxonomic Position Actinopterygii (ray-finned fishes), Cypriniformes (Carps), Cyprinidae (Minnows or carps), Labeoninae
Habit and Habitat Freshwater; benthopelagic; potamodromous
Geographical Distribution Bangladesh, India, Myanmar
Recorded Max Length 81.2 cm SL male/unsexed; (max. published weight: 10.0 kg)
Global Conservation Status Near Threatened (NT)
Economic Impotence Unknown

 

5. Nemacheilus corica [Schistura corica]

Schistura corica © Md. Mizanur Rahman [Source: IUCN Bangladesh (2015a, b)]

Schistura corica © Md. Mizanur Rahman [Source: IUCN Bangladesh (2015a, b)]

Common Name Korica, Koirka, কৈরকা
Taxonomic Position Actinopterygii (ray-finned fishes), Cypriniformes (Carps), Nemacheilidae
Habit and Habitat Freshwater; benthopelagic; potamodromous
Geographical Distribution Bangladesh, India, Pakistan, Nepal, Afghanistan
Recorded Max Length 4.2 cm SL male/unsexed
Global Conservation Status Least Concern (LC)
Economic Impotence Of no interest

 

6. Neoeucirrhichthys maydelli

Neoeucirrhichthys maydelli © Md. Mizanur Rahman [Sourse: IUCN Bangladesh (2015a, b) ]

Neoeucirrhichthys maydelli © Md. Mizanur Rahman [Sourse: IUCN Bangladesh (2015a, b) ]

Common Name Goalpara loach
Taxonomic Position Actinopterygii (ray-finned fishes), Cypriniformes (Carps), Cobitidae (Loaches), Cobitinae
Habit and Habitat Freshwater; demersal,  Tropical
Geographical Distribution Bangladesh, Brahmaputra drainage in Assam (India)
Recorded Max Length 3.6 cm SL male/unsexed
Global Conservation Status Least Concern (LC)
Economic Impotence Unknown

 

7. Ompok pabo

Ompok pabo

Ompok pabo

Common Name Pabo catfish, Pabda catfish, পাবদা, কানি পাবদা
Taxonomic Position Actinopterygii (ray-finned fishes), Siluriformes (Catfish), Siluridae (Sheatfishes)
Habit and Habitat Freshwater; demersal,   Tropical
Geographical Distribution Bangladesh, Pakistan, northeast India, Myanmar
Recorded Max Length 25.0 cm NG male/unsexed
Global Conservation Status Near Threatened (NT)
Economic Impotence Commercial

 

8. Sisor rabdophorus

Sisor rabdophorus

Sisor rabdophorus

 

Common Name Sisor, Chenua, চেনুয়া
Taxonomic Position Actinopterygii (ray-finned fishes), Siluriformes (Catfish), Sisoridae (Sisorid catfishes), Sisorinae
Habit and Habitat Freshwater; demersal; potamodromous
Geographical Distribution Bangladesh, Pakistan, India, Nepal
Recorded Max Length 18.0 cm SL male/unsexed
Global Conservation Status Least Concern (LC)
Economic Impotence Minor commercial

 

9. Tor tor

Tor tor

Tor tor

 

Common Name Tor barb, Mohashol, Tor mahseer, Mahsier, মহাশুল, মহাশোল
Taxonomic Position Actinopterygii (ray-finned fishes), Cypriniformes (Carps), Cyprinidae (Minnows or carps)
Habit and Habitat Freshwater; benthopelagic; potamodromous
Geographical Distribution Bangladesh, Pakistan, India, Myanmar, Nepal, Bhutan
Recorded Max Length 200 cm TL male/unsexed
Global Conservation Status Near Threatened (NT)
Economic Impotence Commercial; Gamefish

 

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.

 

 


Visited 454 times, 5 visits today | Have any fisheries relevant question?

Visitors' Opinions

Author

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

Leave a Reply