Rock Cave Hide | Aquarium Reef Decor | Reptile Amphibian Terrarium Hide | Fish Shrimp Cave | Custom Size and Glow-in-the-Dark Options

Rock Cave Hide – Aquarium, Terrarium & Vivarium Decor

Give your fish, shrimp, reptiles, or other small enclosure inhabitants a natural place to hide and explore with this organic rock cave. Designed with a realistic craggy texture and multiple openings, this piece resembles weathered canyon stone or porous reef rock while also creating practical shelter and enrichment space.
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📏 Size
• Height: 12 cm (4.7”)
• Width: 12 cm (4.7”)

Custom scaling/sizes are available up to 318mm (12.5 in). Contact us for a quote.
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⚠️ Important:

✅ *Some profile photos may depict hand painted models. This item is sold UNPAINTED. Painting services available upon request.
✅ **This item FLOATS when submerged in water. It needs to be glued or fixed to the bottom of aquariums.
✅ ***This item is 3D-printed in Premium, Non-Toxic 🌿 , Washable 🛁, Heat ☀️ & Water 💦Resistant PETG plastic (not decorative PLA). We print with extra strength 💪and thickness for durability.
✅ ****🇺🇸 No Duties, Tariffs or Extra Fees on US Orders.
Shipping is FREE to the US and Canada!
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Detailed Description:

Its hollow interior allow small animals to move through, rest inside, and use different openings as sheltered entry and exit routes. The vertical form makes it especially useful when you want a hide that adds height and visual interest without taking up too much footprint.

This cave works beautifully as an underwater feature in freshwater aquariums, as a dry or humid hide in reptile and amphibian enclosures, or as a natural terrain piece for fantasy or tabletop display builds.

Why this piece works well in aquariums and enclosures
• Realistic weathered rock texture blends naturally into aquascapes and terrariums
• Multiple entry points encourage exploration and provide several escape routes
• Hollow interior offers shaded shelter for fish, shrimp, fry, and other small inhabitants
• Vertical design adds height and structure without overwhelming the layout
• Suitable as underwater décor or as a dry or humid hide in reptile and amphibian setups

This piece works well as both a practical enrichment feature and a sculptural display element. Whether used in a planted aquarium, shrimp tank, terrarium, vivarium, or paludarium, it adds shelter, complexity, and a natural stone-inspired look to the environment.
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This cave is suitable for:
• freshwater aquariums
• shrimp tanks
• small fish and fry grow-out tanks
• planted aquariums
• reptile enclosures
• amphibian enclosures
• invertebrate setups
• paludariums and vivariums
• fantasy terrain and tabletop displays
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⚠️ General Notes

🎨 Colors:
We offer color customization options. We offer standard natural tones and also specialty finishes including metallic and glow-in-the-dark options. If you want a color we don’t seem to have, just reach out and we’ll try to get it for you!

*Each piece is printed and shipped unpainted and uncoated.
We do sell limited hand painted models - Check our listings!

📏 Size:
Custom sizing allows you to perfectly match your tank, enclosure, or tabletop layout.
⚠️ Please measure the inside of your inclosure before choosing a size and allow for some extra space for ease of installation.

🐠 For aquarium use:
**This item is made of PETG plastic, therefore it floats if submerged in water.
For aquarium applications, it needs to be fixed or tethered down in the aquarium. A hot glue gun or superglue are commonly used to fix this item to heavier objects that sink (e.g., plexiglass, flat stone) in aquariums. Some customers drill holes at the bottom to let water into the object to further reduce buoyancy.

⚙️ Material:
***All of our enclosure décor and structural pieces are 3D printed in premium quality PETG, not PLA. PETG is chosen for its improved durability in wet environments, its better resistance to water and routine enclosure conditions, and its better suitability for the warmer (i.e., heat lamps) environments often found in reptile and amphibian setups.
🧼 This material is soap-resistant and alcohol-resistant and therefore easy to clean.

🌿 PETG is non-toxic for aquarium/vivarium applications and is commonly used in many food-contact, laboratory, and medical packaging applications.
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💡 Finish & Print Quality:
Printed at high resolution and slow speed to preserve crisp texture and natural stone-like surfaces. Our prints are also reinforced for durability - they are denser and heavier than our competition.

As with all 3D-printed pieces, subtle layer lines and tiny variations are normal and part of the crafted character. Each piece is unique.

Colour variations between the finished product and website photos can occur due to lighting, screen calibration, photography settings and other technical and technological reasons. We do our best to represent colours and the overall architecture as accurately as possible.
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🇺🇸 U.S. Orders — No Duties, Tariffs or Extra Fees
All Molten Modern products are made in Canada and ship Delivered Duty Paid (DDP).

All customs fees, tariffs, and import charges are prepaid by us — you will not pay anything upon delivery.

Each item is made to order in 5–7 days. Once completed, it ships immediately via USPS and typically arrives within 3–9 days.

🚚 We keep shipping fees to a minimum by closely matching actual postage and packaging costs. Orders are shipped via USPS with reliable, cost-efficient rates and no unnecessary handling markups.
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👉 Return and Refund Policy:
All items are custom and made to order and therefore final sale, with no exchanges or refunds. However, if there is a problem with your order, we will be happy to correct matters and make it right.
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This model is licensed to Molten Modern by Crizzy Designs.

About the designer:
3D designer with a passion for turning digital models into objects. My journey into the world of 3D design and printing started a few years ago, and what began as a curious hobby quickly turned into a full-blown obsession.