The Halda River — the world’s only gene bank for pure Indian carp fishes such as ruhi (Labeo rohita), catla (Labeo catla), Mrigal (Cirrhinus cirrhosus) and Kalibaush (Labeo calbasu) — has resumed hosting fish eggs in recent years, after fish eggs had all but disappeared from the river in 2016. At its height in 1941, […]