Caves & tunnel hides
Shelters for the floor of your aquarium, printed in black PETG. Riverstone Ruins has six open-through tunnels in two staggered rows and comes in Small, Medium and Large. The Riverstone Pleco Cave is a low cave with one rounded entrance, a smooth continuous chamber and a closed back. Each piece is designed by Aqua Stiles and printed to order in York, Pennsylvania. Check the listed tunnel and outside dimensions against your fish before choosing; sizes are not a species-fit guarantee.
Questions about caves & hides
Which size should I choose?
Compare the tunnel opening or outside dimensions on each product page with your fish's body and fins, and choose comfortable clearance. Size names do not guarantee suitability for any species or adult size.
Do they need assembly?
No. Each shelter is printed as one piece.
How do I prepare one for my tank?
Rinse it in clean, dechlorinated water without soap or detergents, inspect it, then submerge it while tilting to release trapped air.
Need something for your setup?
Tell us what it should do. Dimensions, equipment details, photos or a quick sketch help us understand your idea.