Fish Breeder Box – Aquarium Fry Hatchery & Isolation Net Tank

Fish Breeder Box – Safe Fry Hatchery & Juvenile Fish Isolation Net

Give your fish the best start in life with this Fish Breeder Box — a purpose-built aquarium hatchery and isolation net tank designed to protect fry, shrimp, and vulnerable fish from aggressive tank mates. Whether you're breeding, separating, or nursing juvenile fish, this breeder box creates a safe, stable micro-environment right inside your existing aquarium.

Why You'll Love It

• Enhanced Fish Breeding: Ideal for breeding, isolating, or acclimatising fish. The fine white mesh construction allows water circulation while keeping fry completely secure and visible at all times.
• Hassle-Free Installation: Mounts effortlessly in your aquarium via a sturdy suction cup — no tools needed. The rigid PP frame pillar keeps the box upright and stable even with active fish inside.
• Fry Protection: Separate aggressive or larger fish from vulnerable fry and weak specimens, dramatically improving survival rates during the critical early stages of development.
• Ultra-Fine Mesh Design: The approximately 1 mm mesh aperture keeps fry safely contained while allowing clean water to flow freely, preventing impurities from entering the breeding chamber.
• Nurse Tank for Shrimp & Small Fish: Perfect for isolating shrimp, nano fish, or injured fish from overly assertive tank mates, promoting a healthier and more harmonious aquarium ecosystem.
• Non-Electric & Low Maintenance: No electricity required — simply hang, clip, and let the aquarium's natural water flow do the rest.

Specifications

What's in the Box

• 1 × Fish Breeding Isolation Box (size of your choice)

Note: Due to different screen settings, the item colour may appear slightly different from the photos. Please allow a 1–2 cm measurement variance due to manual measurement methods.

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Learn more: U.S. Fish and Wildlife Service

Frequently Asked Questions

Q: What sizes does the fish breeder box come in, and which should I choose?

A: The fish breeder box is available in two sizes. The Small size measures approximately 16 × 14 × 15 cm and is ideal for small fry, shrimp, and nano tanks. The Large size measures approximately 26 × 15 × 15.5 cm and is better suited for larger fry or multiple juvenile fish. Choose based on the size of your aquarium and the number of fish you plan to isolate.

Q: How does the fish breeder box attach to the aquarium?

A: The breeder box attaches quickly and securely using a suction cup that adheres to the inner glass wall of your aquarium. The sturdy PP frame keeps it upright and stable — no drilling, clamps, or special tools required.

Q: Will water circulate freely through the mesh breeding box?

A: Yes. The ultra-fine approximately 1 mm mesh allows the aquarium's water to flow in and out freely, ensuring fry receive oxygenated, filtered water while remaining safely separated from larger or more aggressive tank mates.

Q: Is the fish breeder box safe for shrimp?

A: Absolutely. The fine mesh construction is specifically designed to keep small shrimp and nano fish safely enclosed, preventing escapes while still allowing water exchange. It is a great tool for isolating breeding shrimp or protecting young shrimp from predators in a community tank.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.