flocks of fish swim under water. multi-colored, yellow angelfish in the aquarium. aquarium fish, exotic animals, underwater world

africa african altolamprologus animal aquarium aquatic beautiful black calvus carnivores caudal changes cichlid cichlidae close color colorful coral cute deep diving dorsal eastern environment exotic eye fin fins fish freshwater goldfish lake life marine nature ocean pearl pectoral pelvic pisces predator sea seawater swim tanganyika tank tropical underwater water white wild wildlife world