TROPICAL FISH Fish average 16 inches in length and are listed left to right, top to bottom. Click on image for a larger, more detailed picture These fish will glow in the black light. The orange finned and the red and white are the best for this purpose. If you want more than one fish please change the quanity ordered. Also check the boxes next to the fish you want. Rainbow Opal, Rainbow Angel, Spitlure.