In Japan, some fish farms have adopted an interesting approach to improve fish growth by playing music. After the eggs hatch, juvenile fish are exposed to music during feeding times, helping them associate the sound with mealtime and encouraging them to gather at the feeding area. As they grow and are moved to larger ponds, the same music continues to be played during feedings, reinforcing their behavior and improving feeding efficiency.
Another innovative technique comes from Moscow Agricultural University, where researchers experiment with water temperature control. By using a heater to raise the pond temperature by 2–5°C above normal, they can significantly speed up fry growth without altering their diet. This method not only enhances growth rates but also improves the fish's ability to adapt to temperature changes, leading to a reduction in mortality by 2–3%.
In the U.S., a fish farming company has spent eight years developing a unique strain of fish through selective breeding. The result is a spineless fish with only one remaining bone, as its internal skeletal structure has largely degenerated, making it easier to eat and more appealing to consumers.
Meanwhile, in the UK, the Western British Fisheries Experimental Station uses a fat-feeding method. They add 4–8% animal or plant-based fat to semi-refined fish feed, which helps reduce mortality among fry and supports healthier development. These methods show how creative and scientific approaches can enhance aquaculture practices around the world.
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