Conservationists from WWF‑Pakistan say the Amazon sailfin catfish native to South America has been discovered in multiple water bodies across Sindh and southern Punjab raising alarms about biodiversity loss.
The catfish was first spotted at the Karachi Fish Harbour reportedly transported from a pond near Sukkur. Known for its aggressive nature and adaptability the species can out compete native fish spread disease and disrupt natural habitats making it nearly impossible to control once established.
WWF‑Pakistan warns that this is part of a broader trend: at least 26 non native fish species have been introduced into Pakistan’s waters over the years either accidentally or through the aquarium trade. These invasives threaten local fisheries reduce fish stocks and damage the livelihoods of communities that depend on freshwater resources.
Experts are urging authorities to strengthen monitoring enforce quarantine measures on imported fish and take urgent action to protect rivers lakes and reservoirs from further ecological damage. They stress that without prompt intervention Pakistan could face long term consequences for both its environment and economy.
The spread of these alien species highlights the need for public awareness and policy measures to preserve the country’s freshwater biodiversity before it’s too late.
