Made of thickened PVC fabric and high-transparency PVC, the pond is tear-resistant with seamless, waterproof stitching. With rust-resistant stainless steel pipes and a 470-gallon capacity, it’s ideal for indoor and outdoor use for koi, goldfish, shrimp, crabs, etc. | Vevor | | Canvas Fish Pond, 470 Gal Above Ground Fish Pond, PVC Koi Tank with Clear Viewing Panel, Rectangular Goldfish Tank | Black | Best Buy