Small betta hammock with suction cup; measuring 60D x 40H mm; just right for small or nano tanks; place it on the gravel or stick on glass | The hole pattern design will create a shady shelter and a hiding spot for your aquatic pets to play and sleep; great surface for growing biofilm fulfilling shrimp needs | Betta fish tank must haves; smooth-edged to avoid injuring fins; unique; 3D printed in durable PETG plastic, does not alter or pollute the water | Can be used as a planter; suitable for planting java moss, fern, anubias and other aquatic plants; stuff the plants inside the holes, they will attach to the surface | Can be used in freshwater aquarium tank and reef tanks should you choose to give your saltwater fish a playground; made to outlast your tank