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BiologyOccurs in streams, preferring cool and swift waters associated with springs (Ref. 59043). Inhabits clear waters of rivers and lakes where it forms small schools in the middle or upper layers of the water as well as close to the bottom. Frequents areas with aquatic plants. Field observations have shown that adults feed on zooplankton, small insects and larvae (Ref. 12266). Spawns in January-March (Ref. 59043). Threatened due to pollution, water abstraction and habitat destruction (Ref. 26100).