What indicator suggests the need to cease electrofishing efforts temporarily?

The need to temporarily cease electrofishing efforts is indicated by signs of excessive stress in captured fish populations. When fish display signs of stress, such as rapid gill movement, loss of equilibrium, or excessive swimming activity, it signifies that the fishing process is having a negative impact on their well-being. Prolonged exposure to the stress induced by electrofishing can lead to injury or even mortality among the fish. Therefore, recognizing these signs is crucial for ensuring ethical fishing practices and promoting the recovery and health of the fish populations being studied.

While low water temperatures, increased catch rates, and changes in weather conditions may influence fishing efficiency and conditions, they do not necessarily indicate an immediate need to halt electrofishing due to the welfare of the fish. The emphasis should always remain on the health of the aquatic organisms, making the observation of stress levels the primary concern when deciding to continue or pause electrofishing activities.