What is one consequence of fish being fed by humans?

When fish are frequently fed by humans, they often lose their natural fear of people. This behavior change can occur because the consistent presence of humans associated with a food source leads fish to associate humans with safety rather than a potential threat. Over time, as fish become accustomed to being fed, they may approach divers and snorkelers more readily, which can alter their instinctual behaviors and responses to natural predators.

The other options do not accurately reflect the typical consequences of human interaction. For example, feeding fish does not generally lead to increased coloration; instead, their natural patterns and colors are primarily influenced by genetics and environmental factors. Additionally, while fish can display social interactions, they do not form friendships in the way humans understand them; rather, they may associate with certain individuals based on non-threatening contexts like feeding. Lastly, human feeding does not usually cause fish to migrate; their migratory patterns are driven by ecological factors such as breeding cycles and food availability in their natural habitats.