Why do golgfish who do not live in the wild often have brighter colors?

Goldfish that do not live in the wild often exhibit brighter colors due to selective breeding and the absence of natural predators. In captivity, breeders have focused on enhancing certain traits, such as vibrant coloration, to appeal to pet owners. Additionally, captive goldfish are not subjected to the environmental pressures that typically dull the colors of wild fish, allowing their vivid hues to thrive.