Flashlights can sometimes kill fish.
There are good reasons to prohibit the use of flashlights in aquariums. Flashlights damage the vision of some fish and can even cause blindness. In addition, strong high-frequency instantaneous light can also scare fish and interfere with their normal activities and even physiological functions.
According to reports, during National Day in 2013, hundreds of tropical fish at the Liuzhou Zoo and Aquarium in Guangxi were "flashed" to death by flashlights . “There are a lot of tourists during the National Day holidays. Some tourists turn on the flash to take photos, which suddenly stimulates the tropical fish to strong light, making them restless and rushing. Additionally, the aquarium is small. , and the frightened fish will run into the aquariumor to fish placed in the aquarium. Corals, stones and other objects can cause trauma and cause illness and death. Additionally, when some fish become frightened, they lose their appetite or refuse to eat. Uneaten food in the aquarium will ferment, affecting water quality and causing the fish to die.