Experts explain why Thai Mangur fish is hazardous to human health

Nile Tilia, carp, and catfish were introduced for commercial farming. But they have esced into the environment, Ghorpade explained. He compared the threat to the spread of Burmese pythons in Florida, where invasive predators dramatically altered local ecosystems.

Like Burmese Python in Florida, they pose a serious threat, and there is an urgent need to eradicate them from our riparian and riverine ecosystems, he added.

These aggressive, non-native fish outcompete indigenous species for food, degrade water quality, and harm biodiversity in rivers and reservoirs across the country, Ghorpade said.

Their rid growth and adtability make them especially difficult to control once they spread into natural water bodies. The inherent traits of these species that were pealing for introduction — such as rid growth in both size and population, ease of cultivation and maintenance, and tolerance to harsh conditions, have given them a distinct advantage over native fishes, he noted.

Ghorpade also pointed out that India still lacks sufficient data and stronger legal mechanisms to fully assess and manage the ecological damage caused by invasive aquatic species.

There is a lack of comprehensive information regarding the ecological and economic impact of aquatic invasive species, he said. Accurately estimating the impact of invasive species on native biodiversity is crucial in guiding policymakers.

While the Wild Life (Protection) Amendment Act 2022 includes provisions related to invasive species, he believes stronger implementation and dedicated regulation are needed.

Why doctors are concerned about consuming Thai Mangur

Beyond environmental concerns, doctors warn that the conditions in which Thai Mangur is often farmed can create serious food safety risks for consumers.

According to Dr Manish Dodmani, Consultant – Gastroenterology, KIMS Hospitals, Thane, the concerns surrounding Thai Mangur is closely linked to hygiene concerns and contaminated farming practices.

Thai Mangur has remained controversial largely because of the conditions in which it is often farmed and the potential health risks linked to contaminated feed and polluted water, Dr Dodmani explained.

One of the biggest concerns is food-borne illness. If the fish is raised in unhygienic environments, consumers may be exposed to harmful bacteria, parasites, or chemical residues that can trigger severe stomach infections, vomiting, diarrhoea, and food poisoning, he said.