Samut prakan: Black-chinned tilapia have inundated the Tamru floodgate, with fishermen asserting that these fish have long since escaped into the sea. A massive influx of this species was observed after a severe infestation along the Bang Pu canal, sparking concerns among local fishermen.

According to Thai News Agency, reporters visiting the Tamru pumping station in Mueang Samut Prakan district noted that the Bang Pu canal sluice gates had been opened to release water into the sea ahead of anticipated rain. Fishermen continue to catch large numbers of black-chinned tilapia, expressing fears that this invasive species had already reached the sea. A survey by the Samut Prakan Marine Fisheries Research and Development Center confirmed the presence of these fish in various areas, including Tamru Canal and the Bang Pu mangrove forest.

The survey highlighted a significant drop in canal water levels, with many black-chinned tilapia spotted near the sluice gate. Fishermen were seen casting their nets, catching numerous black-chinned tilapia, which have become a predominant aquatic species in the Bang Pu canal.

Local fishermen, such as Mr. Than and Mr. Chalerm Atsam-ang, noted a shift in their catch, predominantly consisting of black-chinned tilapia. They remarked on the fish's firmer flesh, often used for frying or making salted fish. The widespread presence of this species has led to a decline in native fish varieties.

Residents are concerned about the sluice gates' role in potentially allowing black-chinned tilapia to escape to coastal waters. Data from the Samut Prakan Marine Fisheries Research and Development Center supports this concern, showing the spread of black-chinned tilapia across multiple districts, with varying salinity levels.

The findings of black-chinned tilapia alongside other aquatic species indicate their continuous breeding and growth, even in brackish and coastal waters. This aligns with local observations of their rapid population increase and dominance in Bang Pu Canal, impacting native fish populations.

Residents urge relevant agencies to monitor the situation, study the ecosystem impact, and implement measures to control the black-chinned tilapia population, particularly in canals leading to the sea, to prevent further spread and reduce long-term ecological impact.