Specifically designed for guppy breeding, this side‑transparent spawning box is crafted from 3D‑printed materials and securely fastened to the side glass wall of the aquarium using clips and snap‑locks. It requires no adhesive or drilling, offering a perfect fit for glass up to 15 mm thick. The side‑transparent design allows for 360° observation of the mother fish’s egg‑laying process and the hatching of fry, while effectively preventing adult fish from preying on eggs or newly hatched fry.

• Adhesive‑free design: Utilizing clips and snap‑locks for secure attachment, this spawning box is compatible with 10 mm, 12 mm, and 15 mm glass—easy to install and guaranteed not to come loose.
• Side‑transparent visibility: The front and sides are fully transparent (or feature a combination of openwork panels and clear acrylic sheets), providing crystal‑clear views of breeding details while meeting the needs of “breeding documentation” and record‑keeping.
• Escape‑proof and water‑permeable: The box features a dense grid of small holes (hole diameter ≤ 2 mm) that prevent fry from escaping while ensuring adequate water circulation to maintain stable water quality.
• Multi‑functional versatility: Ideal for guppy breeding, temporary rearing of fry, isolation of sick fish, and planting aquatic plants such as mosses or Java ferns.

Design Highlights

• Combination of side transparency and openwork: The sides are fully transparent, while the front and top are fitted with mesh openings—providing both unobstructed visibility and effective escape prevention, balancing “observation” with “breeding safety.”
• Dual securing system: A combination of mechanical clips for glass attachment and snap‑locks for secondary reinforcement ensures a snug fit across various aquarium configurations, remaining firmly in place even when the tank is shaken.
• Precise glass compatibility: The clip spacing and snap‑lock dimensions are meticulously calibrated to accommodate glass up to 15 mm thick—without scratching the tank walls.
• Customizable options: The 3D‑printed model allows users to adjust the side‑transparent area (fully transparent or partially transparent), the mesh hole pattern (circular or strip‑shaped), and the spawning box dimensions to perfectly match the size and body shape of guppy females.

Technical Specifications

• Compatible glass thickness: ≤ 15 mm (customizable in 8 mm, 10 mm, or 12 mm)
• Spawning box dimensions: approximately 12 cm (L) × 8 cm (W) × 10 cm (H)—optimized for guppy females, with the option to scale down or enlarge based on individual needs.
• Recommended material: PETG (water‑resistant, temperature‑stable, and highly transparent for clear visibility).
• Hole type/diameter: Strip‑shaped holes (2 mm wide, 3 mm apart) or circular holes (φ2 mm), with a density of ≥ 60 holes per square decimeter to prevent fry from escaping.
• Printing recommendations (for 3D‑printed versions): Use a 0.2 mm nozzle, set the infill to 30% for enhanced structural integrity, ensure sidewall thickness ≥ 1.5 mm in the side‑transparent areas to prevent breakage, and round off edges with an R1 chamfer to avoid scratching fish and shrimp.

Application Scenarios

▸ Guppy Breeding: Place female guppies in the spawning box to monitor egg‑laying, then temporarily house the hatched fry after they’ve emerged, safeguarding them from predation by adult fish.

▸ Fry Protection: Introduce newborn guppy fry into the spawning box for close monitoring of their growth, while keeping them safe from attacks by larger, more aggressive fish.

▸ Sick Fish Isolation: Isolate sick fish within the spawning box, allowing for easy observation of their condition and facilitating targeted treatment while minimizing the risk of cross‑infection.