LED does the aquarium lamp fall off the surface of the water 2cm?
In addition the influence factors are: the dragon fish eye drop dragon fish individual character, draw on the surface, the surface of the aquarium to attract, the stimulation of external environment, the tank at the bottom of the food residue, the nutritional content of food, fish activity intensity and so on.
The lights of the dragon fish eye off effects, including distance, angle, brightness and so on, every fish acceptance of light is not the same as everyone knows, there are both biological phototaxis shame light, and there is no authoritative test, so there is no standard answer, but suggested that both sides of the light, or the dragon fish side tour.
There are many reasons why dragon fish lose their eyes. Light is only one factor.
