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Nuff45
12-16-2003, 6:59 AM
Just an interesting observation I noticed this morning when I turned on the tank lights. The Neon Tetras were essentially colorless! I did not know that they lost their color at night. It takes less than a minute for them to all come out of hiding for the night and brighten up again. Even the "headlights" are off!!
:)

dolphin7
12-16-2003, 7:51 AM
Yup, fish use platelets to boost their colors, which require energy to function. As your fish "fall asleep", energy decreases & their colors fade. Fish do sleep :D