koi fish, specifically nishikigoi (cyprinus rubrofuscus), colorful decorative fish in an artificial pond

yellow koi lucky background colorful tropical natural asia graceful white lake nature animal oriental gold swim luck pool golden underwater japan holy red fish relaxation swimming garden color beautiful water asian pet japanese orange group decorative peace aquatic hobby fortune goldfish pond good motif aquarium crowd feeding carp nishikigoi cyprinus rubrofuscus artificial pond