So one of my guppies has been confusing me lately because his coloring is never really consistent. Water parameters are good and he isn’t showing signs of stress. The thing is he just seems to change color in a matter of seconds. I get that it could be lighting/reflections or maybe something socially, but I’ve never seen any of my other guppies do this. He seems to be yellowish green most of the time, but sometimes he’s bright yellow or bright green, Aqua, pale bluish white, and even a weird pale orange. Like I said, it happens really fast and it affects his whole body. It might be nothing but I’m curious in seeing if anyone out there has a similar experience or an answer.