In late November 2024, scientists made an exciting yet concerning discovery near Keelung Port, northern Taiwan. Two adult specimens of gilthead sea bream (Sparus aurata) were found at a depth of roughly 20 meters. This is the first time this Mediterranean fish has been spotted in the northwestern Pacific, marking a significant expansion from its usual habitat. The fish were positively identified through both physical features and genetic testing.

Experts believe the culprit behind this invasion is likely aquaculture facilities where these fish are farmed. The arrival of this new species raises questions about its potential impact on the local marine ecosystem. Scientists are urging careful monitoring of these exotic aquaculture species to understand and mitigate any possible ecological changes.

Gilthead sea bream, also known as dorade, is a popular fish for aquaculture due to its delicious taste and robust nature. However, when it escapes from farming sites, it can disrupt the local ecosystem by competing with native species for resources. This discovery highlights the importance of regulating and monitoring aquaculture practices to prevent such invasions.

Keelung Port is a major shipping hub, and it's not surprising that non-native species could hitch a ride on ships. Still, the presence of these fish in Taiwanese waters is a wake-up call for marine scientists and conservationists. It's time to consider how we can better protect our local marine life from invasive species.

Uninvited Guest: Sea Bream Spotted in Taiwan Waters

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