When fishing or netting, don't set nets in closed fishing areas or closed seasons, never use electricity, poison or explosives to fish at any time, and don't use banned fishing gear

In plain words

Using electricity, poison or explosives to fish in a closed area or during a closed season is enough to meet the threshold for the crime of illegal fishing of aquatic products (非法捕捞水产品罪), with up to 3 years at the heaviest. Only where the catch was small and the harm clearly minor might there be no prosecution. Electric fishing also brings a fine, generally up to 200,000 (20万) CNY, and going into the water carrying electric fishing equipment can be fined too. Along the Yangtze River, a man who electrofished and sold 9,000 CNY worth of fish was sentenced to 1 year.