There is no doubt that the most colorful fishes live in saltwater. Almost every color of the spectrum can be found on various marine fish. Not only do the colors differ greatly between marine fish species, but so do the patterns. The combination of colors and patterns might help the fish blend into their colorful surroundings to hide from predators or to catch their next meal. The different colors and patterns may help fish identify those fish which belong to the same species. In some fish that are very aggressive and territorial, the juveniles look very different than the adults. This allows the juveniles to live in the same area without being recognized.