Top Fin Natural Tree Root Ornaments www.petsmart.com - $23.49 (jumbo) Product Description: Your fish will have plenty of places to hide and explore when you add a Natural Tree Root Ornament to their underwater world. They're also great in terrariums as a natural-looking accent and a place for reptiles to climb and bask. Made of versatile poly-resin, they will prove to be a durable and easy-care accessory. RattyRat's Review: These natural looking ratty sized roots are great. There natural texture makes them easy for rats to grip and climb, and rats just love perching on them. The best part is that these are made of plastic so they are a dream to clean!