In a landmark achievement for India’s ornamental fisheries and biodiversity conservation, the ICAR-Central Inland Fisheries Research Institute has successfully developed the country’s first captive breeding and larval rearing protocol for Channa stewartii, commonly known as the Assamese snakehead.
Native to the pristine hill streams of the upper Brahmaputra region, Channa stewartii is a visually striking species known for its iridescent blue fins and distinctive striped body. Despite its small size (around 20 cm), it has gained popularity in the ornamental fish trade, with market prices ranging from ₹600 to ₹1200 per pair. However, increasing demand has led to unsustainable wild collection, threatening fragile aquatic ecosystems in Northeast India.
To address this challenge, ICAR-CIFRI initiated a focused research program under the All India Network Project (AINP) on Ornamental Fish Breeding and Culture at its Guwahati Regional Centre. Beginning in April 2024, around 30 wild-caught brooders (200–230 g) were acclimatized under controlled conditions to enable systematic breeding studies.
Researchers created a semi-natural breeding environment using cemented tanks enriched with sand substrates, bamboo structures, and earthen refuges to mimic natural habitats. This setup helped reduce stress and supported reproductive behaviour. Broodstock were maintained under optimal water quality conditions and fed live diets including earthworms, ant larvae, and aquatic invertebrates to enhance gonadal development.
A breeding pair was identified based on clear sexual dimorphism—males exhibiting nuptial tubercles and milt release, and females showing distended abdomens with ova release. The pair was transferred to a specially designed FRP tank, where natural spawning occurred successfully. The species demonstrated fecundity ranging from 1,578 to 2,769 eggs, with spherical, buoyant eggs measuring approximately 820 µm.
In April 2026, the institute achieved a historic milestone with the successful natural captive breeding and larval rearing of Channa stewartii. The process recorded a hatching success rate of 73%, with larvae (approximately 8.4 mm in size) showing active movement and parental care before being shifted to rearing systems. The study confirmed complete lifecycle propagation under controlled conditions.
Significantly, this breakthrough was achieved without hormonal intervention, highlighting the effectiveness of environmental simulation and scientific broodstock management. The method offers a replicable and eco-friendly model for ornamental fish production.
According to Dr. Pradip Dey, Director of ICAR-CIFRI, this development opens new avenues for sustainable ornamental fisheries. He emphasized scaling up hatchery-based production under the Pradhan Mantri Matsya Sampada Yojana (PMMSY), reducing dependence on wild populations, and promoting aquapreneurship among farmers and youth. He also stressed the need for certification systems, regulated harvesting, and regional clustering in Northeast India through collaboration among ICAR, Krishi Vigyan Kendras (KVKs), and State Fisheries Departments.
Beyond its scientific significance, this achievement represents a major step toward conservation and livelihood generation. Enabling captive production and reducing pressure on natural populations, it creates new opportunities for rural entrepreneurship while supporting biodiversity preservation.
As India’s first documented success in breeding Channa stewartii in captivity, this breakthrough sets the stage for future research, large-scale commercialization, and sustainable ornamental fish trade—demonstrating how innovation can align ecological conservation with economic growth.