| 1. | A year after hatching, young ciscoes drift downstream to estuaries.
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| 2. | Usually, several taxa of ciscoes are found in a single lake.
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| 3. | In the Great Lakes, at least five ciscoes coexist.
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| 4. | Blackfin ciscoes measured up to 510 mm ( 21 inches in length ).
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| 5. | The deepwater cisco fishery caught longjaw ciscoes and sold them as " smoked herring ".
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| 6. | Blackfin ciscoes were commercially fished until the early 1900s when declining stocks made the fishery uneconomic.
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| 7. | The last specimens of deepwater ciscoes were recorded in Lake Huron in 1952 and Lake Michigan in 1951.
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| 8. | This classification is not natural however : based on molecular data, ciscoes comprise two distinct lineages within the genus.
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| 9. | The commercial catch peaked around the 1930s when about one-third of the catch of ciscoes was this species.
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| 10. | In previous taxonomic classifications, the ciscoes have been identified as a subgenus " Leucichthys " of the genus " Coregonus ".
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