欧美a视频在线观看-欧美bbww-欧美bbwxxxx-欧美freexx-亚洲国产剧情在线-亚洲国产剧情在线精品视

Where does the earth-fishy smell of fish come from?
date:Feb 28, 2019
row in ponds, rivers and lakes, where humus is abundant and suitable for microbial reproduction and growth. Bacteria with earthy odor attach to plankton such as diatoms, cyanobacteria and some aquatic plants. Freshwater fish ingest these substances through the food chain and then enter muscle, blood and tissue cells. There are less humus and plankton in the surface waters of big rivers, big rivers and reservoirs, and the fishes in them have a weak earth-fishy smell. The composition of earth-fish

07/01 14:26