Even if they enter the natural environment, their light-emitting bodies would turn them into very easy prey for predators, making it difficult for them to survive. Their glow is produced by a naturally fluorescent protein, and not a manmade compound, so that there would be no danger posed to any fish that might eat them.
「基因轉殖螢光魚並沒有上述的疑慮，」邰港生物科技研發中心經理林學廉解釋，就算流入自然環境，身體發光的特性會讓螢光魚很容易成為獵食的目標，反倒不易存活。