The Cisco Coregonus artedi is a planktivorous fish that is widely distributed in lakes across glaciated areas of North America. With retreat of Laurentide ice, Cisco dispersed from refugia into a vast network of meltwater (proglacial) lakes that eventually receded, stranding populations in depressions—today’s lakes. Refugial populations also colonized lakes that fell outside of the footprint of a proglacial lake. These two types of Cisco lakes, those inside the footprint of a proglacial lake and those outside the footprint, though uncounted, number in the high hundreds or more.

中文翻译：

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思科中的物种，重点是次要联系，可塑性和杂交

Cisco Coregonus artedi是一种浮游鱼类，广泛分布于北美冰河地区的湖泊中。随着Laurentide冰的撤退，Cisco从避难所分散到一个庞大的融水（冰川湖）湖网中，这些湖最终消退，使人口陷入了萧条-今天的湖泊中。避难人口还殖民了落在冰河湖足迹之外的湖泊。这两种类型的思科湖，虽然位于湖泊湖泊脚印之内，却位于湖泊脚印之外，尽管数量不多，但数量却高达数百或更多。