What trade-off is noted when knifefish angle their snouts downward for maximum electrical field pickup?

Answer

It imposes a hydrodynamic cost, suggesting they forgo energy conservation.

Sources indicate that the action of angling the snout downward to maximize field pickup imposes a hydrodynamic cost, meaning the fish actively sacrifices energy conservation.

What trade-off is noted when knifefish angle their snouts downward for maximum electrical field pickup?
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