Perch, <i>Perca fluviatilis</i> show a directional preference for, but do not increase attacks toward, prey in response to water-borne cortisol.

There was a marginally non-significant trend for perch to show a higher proportion of lunges toward sticklebacks in the chemical stimulus zone when cortisol was added, compared to the water control ( Table 1 & Fig. 2C ).

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