Scientists at Ateneo University Raise Alarm Over Alien Fish in Laguna de Bay

Biologists from the Ateneo de Manila University warned that a species of fish known as Barbonymus schwanefeldii, or tinfoil barb, typically kept as a pet, was discovered in Laguna de Bay. This fish, with its silver body and orange fins, was found in Barangay Patunhay in Cardona, Rizal, in September 2024.

The scientists highlighted that while this fish is popular in the ornamental fish trade, it had not been previously documented in any freshwater ecosystems in the Philippines. The mode of introduction of this non-native species into Laguna de Bay remains unknown, raising concerns about its potential impact on the native fish population.

The researchers expressed worries that the omnivorous nature and migratory behavior of the tinfoil barb could lead to competition with native fish for resources in the lake. They emphasized the importance of monitoring and raising awareness about invasive species to protect the local aquatic biodiversity.

Lead researcher Kent Elson Sorgon urged local authorities to increase monitoring efforts to prevent the spread of non-native species like the B. schwanefeldii. The study also highlighted the growing threat to freshwater fish in the Philippines due to the introduction of non-native species, emphasizing the need for comprehensive documentation and understanding of their dispersal.

According to the source: GMA Network.