‘Fire-eyed’ Angus fish to be available again
Published: 02:29 PM, 28 September 2020 Updated: 03:08 PM, 28 September 2020
Extinct Angus fish
Angus fish, a freshwater fire-eyed fish, was red-listed in 2005 by the International Union for Conservation of Nature (IUCN) which means the fish was written on the way of extinction 15 years ago. However, the fish is going to be easily available again soon, according to the Bangladesh Fisheries Research Institute (BFRI).
It is learned that Angus fish was found in abundance in greater Sylhet and Rangpur-Dinajpur areas. In the region, it was known as Agun Chokha, Angrot and Karsa.
According to the BFRI, the breeding and production of Angus fish have been rediscovered from the Syedpur sub-center of Nilphamari, as a result, it will be possible to save the fish now. Its production can be increased through cultivation.
“15-20 grams of pona (young fish) of Angus were collected from the Teesta, Chikli and Atrai rivers of North Bengal in 2016 from the Syedpur Freshwater Substation of the BFRI to protect the fish from extinction. After collecting the pona, brood fish is made by rearing them in the pond. Later in the current breeding season, it was possible to produce pona by artificial insemination with hormone injection,” said sub-center chief scientific officers Dr. Md. Rashidul Hasan and Shawkat Ahmed.
Artificial insemination of Angus fish is relatively complex and the pona mortality rate is higher in nursery management, however, more research is being done in this regard, the two fisheries scientists also said.
It is learned that freshwater Angus fish weigh up to 300 grams. The female fish laying eggs upto 20,000-50,000 depending on the size.
Studies have revealed that a mature Angus fish fertile at 60 to 70 grams. Its breeding season is May-August. However, June-July is the highest breeding season. Female fish of the same age are larger in size than adult male fish.
“We have got another breakthrough in the study of recovery and conservation of endangered fish,” said Ekushey Padak awardee BFRI director-general Dr. Yahya Mahmud, about the reproductive success.
He added that the institute has already developed breeding and farming techniques for 23 endangered and native small fish.
The institute is currently conducting research on Rani Fish, Kakila, Piyali, Batasi, Kazali, Salbaim, Della and Bowl fishes, also said Dr. Yahya Mahmud.