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| Lù đù fish (Sciaenidae), a marine species has entered Tháp Mười (plain of reeds) in the southern Long An Province. Scientists now have a problem at hand as they have to confirm why this phenomenon has occurred. – Photo baodatviet.vn |
Viet Nam News
LONG AN — Staff at the Láng Sen Wetland Reserve, the Ramsar site in Đồng Tháp Mười (plain of reeds) in southern Long An Province, has just caught some lù đù fish (Sciaenidae).
Speaking to Tuổi Trẻ (Youth) newspaper, Trương Thanh Sơn, the director of the site, said it was very strange because lù đù is a saltwater fish and lives on the coast or estuary while Láng Sen site is located in fresh water which is some 150km from the sea.
Nguyễn Linh Em, a reserve site staff, who caught the fish, said he had snared many lù đù recently and still stored them at the site.
Besides the lù đù, different kinds of saltwater plants have also appeared at the reserve site, Em said.
According to him, to date there have been no abnormal signs of salinity in the region.
Nguyễn Tác An, former director of the Oceanography Institute in Nha Trang City of Khánh Hòa province, said this was a strange phenomenon.
Most of the marine species entering fresh water are unable to survive, while this fish is still alive, An said to Đất Việt online newspaper.
He believed that the reason for the appearance of the marine species at the reserve is the salinity in the plain of reeds.
But they would need to check the water samples and conduct some more analysis to confirm the phenomenon, An said. — VNS
