Aquarium Decorations
Shrimp House
3D‑printed aquarium
Fish Tank Hideaway
Aquarium landscaping
Corner avoidance
Eco-friendly avoidance
Underground tunnel
Hexagonal Tunnel

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Product Introduction
This product is a three-dimensional hiding-tunnel system specifically designed for the corner space of aquariums. Featuring an innovative L-shaped integrated structure, it fits seamlessly against both the back and side walls of the tank, transforming what is often an overlooked right-angled dead zone into a feature-rich “underground fortress.” Multiple regularly arranged hexagonal tunnel entrances are distributed across the sloping surface and side walls, with internal connections that create a secure, secluded, and highly engaging exploration network for small fish and shrimp—making it an ideal decorative accessory for maximizing tank space utilization and enhancing ecological diversity.
Design Highlights
L-Shaped Corner-Fitting Design: Tailored specifically for the right-angled corners of aquariums, this design conforms perfectly to both glass surfaces, enabling waste-free installation. The triangular stable structure ensures secure placement and prevents the tunnel from being easily pushed by fish.
Multi-Entrance Hexagonal Tunnel Network: Several hexagonal openings are cut into the sloping surface and side walls to serve as tunnel entrances and exits. These openings are interconnected internally, forming a complex three-dimensional maze that satisfies fish’s natural instincts to burrow, hide, and play.
Inclined Top Surface and Hidden Spaces: The unique sloped top design not only offers a distinctive aesthetic but also creates shaded overhead spaces and deep hidden areas at the base, providing fish and shrimp with a range of options from shallow to deep habitats based on their individual preferences.
Biomimetic Natural Tones: Available in light beige or natural wood tones, the material has a soft texture that blends effortlessly with natural-style aquascapes featuring driftwood, rocks, and aquatic plants, without appearing out of place.
Modular Expansion Potential: The standardized hexagonal opening design and overall structure allow this tunnel to be combined and expanded with other tunnels and hiding houses in the same series, enabling the creation of even larger underground ecosystems.
Technical Specifications
Material: Aquaculture-grade safe plastic (such as ABS)
Placement Location: Bottom corner of the aquarium
Compatible Size: Approximate edge length of about 10–12 cm (the model scale can be adjusted according to the specific tank size)
Tunnel Entrances: Hexagonal openings with an inner diameter of approximately 1.5–2 cm
Color: Light beige/natural wood color
Installation: Simply place it in the bottom corner of the tank; no additional fixing required
Application Scenarios
Foreground/Midground Decoration in Planted Tanks/Eco-Aquariums: Serves as a focal point in the foreground or midground, filling empty corner spaces and complementing foreground plants such as mosses and Cryptocorynes to create natural riverbank or cave-like landscapes.
Shelter for Small Fish and Shrimp: Particularly suitable for small species like neon tetras, guppies, rice shrimp, and cherry shrimp, providing them with a safe haven to avoid strong light, rest, and reproduce, thereby effectively reducing stress responses.
“Refuge” in Community Tanks: In mixed-species tanks, it offers gentle or vulnerable individuals a dedicated, hard-to-reach, complex refuge where they can escape predation.
Hatching and Rearing of Fry: Provides an excellent hiding place for newly hatched fry or juvenile shrimp, significantly increasing their survival rate.
Originality of the Model
The author declares that this work is their personally original model
This model is licensed under the following terms:
This work is licensed under a Standard Digital File License. Digital files have a strict non-commercial, personal use only license.
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital file or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including remixes of this object). You can not host these files on other digital platforms, web stores or cloud repositories. The objects may not be used in any way whatsoever in which you charge money, collect fees.
Models(1)
鱼缸地下隧道躲避.3mfDesigner109.73 KB
2026-04-05





