The share price of China's biggest publicly listed seafood companies plummeted Monday as stock exchanges opened after the extended Chinese New Year break.

Baiyang Investment Group, owners of the country's largest tilapia producer Baiyang Aquatic, saw its share price fall almost 10 percent after a 10-day closure of China's stock markets as the coronavirus and the trade and logistics restrictions put in place in its wake threw a dismal veil over markets.