TETRA POND KOI STICKS 1L, 4L, 7L, 10 Litres : Natural Carp Fish Food Colour Feed Tetra Pond - Koi Sticks 1L, 4L, 7L or 10 Litres Carp Sticks, Natural Carotenoids, Unsaturated Fatty Acids Tetra Pond Koi Sticks provide all the nutrients necessary for a complete and biologically balanced diet for pond koi fish.