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Blueback herring spawn from late March through mid-May, depending on latitude. Females usually mature by age five and produce between 60,000 and 103,000 eggs. Males generally mature earlier at between 3 and 4 years of age and at a smaller size than the females.
Spratelloides delicatulus, the blue sprat, also known as the delicate round herring, blueback sprat, or piha, is a species of marine ray-finned fish belonging to the family Spratelloididae, the small round herrings.
Herring played an important role in the history of marine fisheries in Europe, [2] and early in the 20th century, their study was fundamental to the development of fisheries science. [3] [4] These oily fish [5] also have a long history as an important food fish, and are often salted, smoked, or pickled.
The spawning takes place in April to June. [4] The fertility of the females depends on their size, a 20 centimetres (7.9 in) long individual may lay 50,000 eggs while a 33 centimetres (13 in) females ay lay 200,000 eggs in a spawning season.
Herring spawn Japan: Called matsumae-duke(松前漬け) Herring with mushrooms Lithuania: Traditional Christmas Eve dish. Lithuanians have more than 100 different variations on how to prepare herring. Kibinago: Japan: Kipper: United Kingdom A whole herring that has been split from tail to head, gutted, salted or pickled, and cold-smoked ...
Temperatures range from about 11 to 27 °C. [5] Fecundity can range from 20,000 to 312,000 eggs. [5] Eggs are pelagic. [5] Geography and temperature are important environmental factors in egg and young-of-year development. [12] The lifespan of Alosa species can be up to 10 years, but this is generally uncommon, as many die after spawning. [5]
Clupeiformes / ˈ k l uː p iː ɪ f ɔːr m iː z / is the order of ray-finned fish that includes the herring family, Clupeidae, and the anchovy family, Engraulidae and sardines.The group includes many of the most important forage and food fish.
During the heydays of the 1990s, the pre-spawn herring commanded $1000 per ton, yielding a gross $60 million to fisherman, but by 2020 the tally fell to a $5 million figure. [65] In 2023, the last roe processing plant in Togiak indicated it would not be purchasing herring, and the season was cancelled.