A total of 54 native freshwater fish species of Bangladesh have been declared threatened by IUCN Bangladesh (2000). Among them 12 species are recorded as critically endangered, 28 species are endangered and rest 14 species are vulnerable.
Out of 54 threatened freshwater fish species of Bangladesh, 28 species are found in Chalan Beel (5 species are critically endangered, 12 species are endangered and rest 10 species are vulnerable).
Vulnerable fish species are shown bellow-
Vulnerable fish species (10) found in Chalan Beel are shown bellow-
Bangla Name: Foli
English Name: Bronze Featherback
Scientific Name: Notopterus notopterus
Bangla Name: Raik or Aikhor or Raikhor
English Name: Reba Carp
Scientific Name: Cirrhinus reba
Bangla Name: Tit puti
English Name: Ticto barb
Scientific Name: Puntius ticto
Bangla Name: Ayre or Aor
English Name: Long-whiskered Catfish
Scientific Name: Sperata aor
Bangla Name: Gulsa Tengra
English Name: Gangetic Mystus
Scientific Name: Mystus cavasius
Bangla Name: Nama chanda
English Name: Elongate glass-perchlet
Scientific Name: Chanda nama
Bangla Name: Ranga chanda
English Name: Indian glassy fish
Scientific Name: Chanda ranga
Bangla Name: Meni or Bheda
English Name: Gangetic Leaffish
Scientific Name: Nandus nandus
Bangla Name: Gachua or Cheng or Ghaira
English Name: Walking snakehead
Scientific Name: Channa orientalis
Bangla Name: Kuchia
English Name: Cuchia
Scientific Name: Monopterus cuchia
According to IUCN Bangladesh (2000), the meaning of critically endangered, endangered and vulnerable is given bellow-
A taxon is critically endangered when it is facing an extremely high risk of extinction in the wild in the immediate future.
A taxon is endangered when it is not critically endangered but is facing a very high risk of extinction in the wild in the near future.
A taxon is vulnerable when it is not critically endangered or endangered but is facing a high risk of extinction in the wild in the medium-term future.
IUCN Bangladesh. 2000. Red Book of Threatened Fishes of Bangladesh. IUCN- The World Conservation Union. xii+116 pp.
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