6 Reasons Why You Shouldn’t Feed Wild Fish
by Fahmi, AMD-B’s 2024 Divemaster Intern
Feeding wild fish might seem like a harmless activity, but it can have some unintended consequences for the fish and their surroundings. Whether it’s tossing bread into the water or offering food while snorkelling, feeding wild fish can change their natural behaviours, affect the environment, and impact the balance of the ecosystem. Here’s why it’s best to let wild fish find their own food.
Disrupting Natural Diets
Wild fish are adapted to eat what’s naturally available in their environment. When we introduce foods like bread or snacks, it can disrupt their diet and lead to nutritional issues. For example, bread doesn’t provide the nutrients fish need and can cause digestive problems. Over time, fish that are regularly fed by humans might start relying on these easy food sources, rather than finding their natural prey.
Spreading Disease
Feeding fish can also increase the spread of disease. When fish gather in one spot to eat, they’re more likely to come into contact with each other, which can lead to the spread of diseases and parasites. The food we provide might also introduce bacteria into the water, potentially affecting other marine life.
Disrupting Ecosystem Balance
Marine ecosystems rely on a balance between different species. Feeding wild fish can disrupt this balance. When fish populations grow because of feeding, it can lead to overgrazing of certain plants or a decrease in their natural prey. This imbalance can have effects that ripple through the ecosystem, affecting other species as well.
Changes in Behaviour
Fish that become accustomed to being fed by humans may start approaching people more often, expecting food. This change in behaviour can be problematic in some situations, especially if it affects the natural behaviour of the fish or leads to them becoming more dependent on human interaction.
Impact on Coral Reefs
Feeding wild fish in coral reef areas can be particularly harmful. Many reef fish help maintain the health of coral reefs by eating algae and keeping the ecosystem in balance. When these fish are fed by humans, their natural behaviour changes, which can lead to algae overgrowth that harms coral.
Legal and Environmental Considerations
In many places, feeding wild fish is restricted or not allowed due to the potential impact on the environment. Marine protected areas and conservation zones often have rules against feeding wildlife to help maintain the natural balance of the ecosystem. Respecting these rules supports the efforts of those working to protect these areas.
