When I got my first peacock bass back in July for months he was the vibrant green color with a bright red tail, I got another peacock a few months ago as a tank mate. Recently the larger one turned an almost goldish color his 3 bars went from top to bottom and his tail turned from bright red to a deep almost maroon and his eyes look red. The little one is still vibrant green. My water parameters are perfect, water temp is 30c. They are eating market shrimp, krill, earthworms, and silversides.