Why is the majestic temoleh fish facing extinction in the Perak River?

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The Majestic Temoleh Fish Faces Extinction in the Perak River Due to a Combination of Invasive Species, Habitat Disruption, and Uncontrolled Fishing

The temoleh, a once abundant native freshwater carp in the Perak River, is now critically endangered due to a confluence of factors. The most significant threats stem from the proliferation of invasive fish species, which prey on and outcompete the temoleh, alongside ongoing habitat disruption and uncontrolled fishing activities. These pressures have led to a dramatic decline in the species' population, with landings plummeting from over 3,000 kg in 2023 to a mere 116.40 kg as of August this year.
Invasive Species Pose a Severe Predatory and Competitive Threat

Aggressive invasive species, including the redtail catfish, patin lawi, and Mekong catfish, are directly preying on the temoleh. These non-native fish, often escaping from aquaculture cages along the river, breed rapidly and outcompete the native temoleh for resources. A temoleh weighing even a moderate four to five kg is no match for these invasive predators, contributing to the scarcity of larger specimens.
Habitat Disruption and Uncontrolled Fishing Undermine Conservation Efforts

Beyond the threat of invasive species, the temoleh's survival is further jeopardised by habitat disruption and fishing practices that are not adequately controlled. While conservation and restocking efforts are underway, they are hampered by these broader environmental and regulatory challenges. The Perak Fisheries Department is actively working to address these issues, including amending regulations to protect the species.
Declining Landings Signal a Species on the Brink

The stark figures from the Perak Fisheries Department underscore the severity of the temoleh's decline. Landings have fallen drastically, reflecting a significant reduction in the fish's overall numbers in the river. This sharp decrease highlights the urgent need for comprehensive measures to safeguard the species from complete extinction.
Conservation Initiatives Aim to Reverse the Decline

In response to the critical situation, various initiatives are being implemented to protect the temoleh. These include fishing competitions specifically targeting invasive species to reduce their numbers and the proposed amendment of the Perak Fisheries (River) Rules 1992 to officially list the temoleh as a protected species, thereby restricting uncontrolled fishing. These efforts aim to create a more favourable environment for the temoleh's recovery.

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Why is the majestic temoleh fish facing extinction in the Perak River?

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