Prehistory of Siberia Siberia were hunter-gatherers, whose prey consisted of mammoths and reindeer, and occasionally fish as well. In the 6th millennium BC, pottery spread across the whole of Siberia, which scholars treat as the beginning of the Siberian neolithic. Unlike Europe and the Near East, this event did not mark a major change in lifestyle, economy or culture. The prehistoric inhabitants of the vast areas of taiga and tundra east of the Yenissei and north of Baikal differ in many ways from the prehistoric cultures of the other parts of north Asia. There is stronger evidence than usual for settlement continuity here
Honey blue-eye fish species—eastern mosquitofish ("Gambusia holbrooki"), green swordtail ("Xiphophorus hellerii") and southern platyfish ("X. maculatus")—have established themselves, though their extent is unknown. The aggressive eastern mosquitofish is known to impact on other fish species, and is still introduced to streams in the mistaken belief it assists with mosquito control. Furthermore, populations are impacted by collection of wild fish for the aquarium industry. Algae form the bulk of the diet of the honey blue-eye, with the remainder made up of insects and other aquatic invertebrates. The honey blue-eye generally forages at the surface of the water. Female honey blue-eyes are sexually mature