The bigheads don't jump. It's the silvers that jump, and they don't get quite as large as the bigheads.
Both are filter feeders, and consume large quantities of zooplankton. Zooplankton are at the heart of the food supply chain. The more one species consumes, the less there is available for others........and when fish don't have enough food, growth rates go down, leading to a decline in populations.
It's a bad deal.



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