Fish are adapting to rivers shaped by dams and barriers, and that may be changing how man-made rivers function over time

River restoration has long followed a simple idea: reconnect fragmented waterways, improve habitat conditions and bring rivers closer to their natural state. The assumption has been that healthier rivers will naturally support healthier fish populations.

But researchers behind the study "Eco-Evo-Hydraulics: Integrating Fish Evolution Into Ecohydraulics for Conservation", quoted by TOI, argue that this picture may be incomplete.