What is the defining locational shift observed when Wels catfish transition from resting to active feeding behavior?

Answer

Moving from tight daytime sanctuaries to shallower margins to patrol

The feeding behavior of the Wels catfish dictates a dramatic reversal of its typical location preference. During the day, they seek deep, tight cover. However, when they switch to hunting mode, which typically occurs between dusk and dawn, they vacate these deep sanctuaries. They actively patrol shallower areas, including margins and adjacent features, which brings them closer to accessible prey species that may be feeding near the bank or on shelves adjacent to the deep resting areas.

What is the defining locational shift observed when Wels catfish transition from resting to active feeding behavior?

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