Calico Fantail 2.5-3.5" Add beauty and grace to your pond with these heavenly, ornamental goldfish. Bred for their flowing fins and tail, these lovely creatures move slowly through the water, adding an element of beauty. Be aware that their slow movement in the water make them easy prey for birds, cats and bullfrogs. Make sure you provide these fish with lots of cover with floating plants on the surface of the pond. This will help to provide the protection they need from predators.