Farmed grouper fish die in large numbers due to weight loss; farmers suffer heavy losses and are investigating the cause

The reporter learned that the situation of farmed grouper fish becoming thin and dying in large numbers began last year, causing great losses to many farmers. This situation also puzzled these grouper farmers. At first, they thought it was due to poor management by the breeding workers. After observing for a period of time, they found that there was nothing wrong with the workers' breeding methods and management.

Grouper farmers: "There is water, oxygen supply, and all the conditions are met, so why can't the fish grow? They grow slowly and then lose weight."

Grouper farmers: "Later this year, a boss in Wenchang said that there was something wrong with the feed, so we knew to take the feed for testing."

Sudden clues, coupled with the continued mass death of groupers, farmers began to doubt the feed they used together - "marine fish compound feed" produced by a feed enterprises. Several farmers sent the feed to testing agencies for testing. According to the test results of several different testing agencies, the crude protein content in the fish feed was 51.01% and 52.30% respectively. It did not meet the label on the product packaging that the crude protein content was greater than or equal to 55%.