Far Eastern sardine or ivasi
Far Eastern sardine or ivasi (lat. Sardinops melanostictus) belongs to herrings; according to various sources, it is considered a subspecies of usual sardines.
The name comes from the Japanese 'Ma-ivasi', which is translated as 'sardine'.
It lives in the Tatar Strait, near the coasts of Russia (Kamchatka, Sakhalin Island), Japan, South Korea and China.
It is externally similar to herring: a long silvery body with black spots with a greenish back, and black tail fin. The length can reach 30 cm with a weight of 200-400 gr. It likes deep waters. It eats mainly plankton, small molluscs, crustaceans, larvae. Sardines spawn in May at the temperature of 10° C, so migrate to the North since February. The maximum life period is 8 years.
Until 1941, Far Eastern sardines were catched thousands of tons, but then the population dramatically reduced due to a decrease in water temperature, but the main reason is excessive catching in industrial scales. In Soviet times, fish re-emerged in shops in the form of canned 'Ivasi' and it was very popular, due to its availability and cheapness, and then disappeared once again. Today the fish has a great commercial value, but its population is still low.