Fishermen collected around 8,000 kg eggs from the River Halda, the only natural fish spawning centre in South Asia, on Saturday night.
Upazila nirbahi officer Ruhul Amin said around 400 fishermen collected the fish eggs in two hours from 9:30pm.
The fishermen collected eggs from Kholifar Ghona, Ramdash Munshir Hat to Madunag hat areas.
Fisherman Mohammad Bahadur said that he collected 18-20kg eggs from the river.
The UNO said that the carp fish started releasing eggs and the fishermen started to collect eggs from 9:30pm. Each fisherman collected around 20-25kg eggs, he said.
Generally, mother fish release their eggs during heavy rain in the Bengali month of Chaitra and Baishakh. But the area witnessed low rainfall this year.
The indigenous fish species including Ruhi, Mrigel, Kato and Kalbaush started releasing eggs as heavy rain with thunderbolts started on Friday evening.
About 22,680 kg eggs were collected from Halda in 2018 while 1,680 kg in 2017, 735 kg in 2016, 2,800 kg in 2015 and 16,500 kg in 2014.
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