Fish Breeder Box – Aquarium Fry Hatchery & Isolation Net Tank

Fish Breeder Box – Safe Fry Hatchery & Aquarium Isolation Net

Give your fish the best start in life with this versatile Fish Breeder Box. Designed for aquarium enthusiasts, this mesh isolation box keeps fry, juvenile fish, shrimp, and weaker tank inhabitants safe from aggressive tank mates — all while allowing natural water circulation through the ultra-fine 1mm mesh walls. Whether you're hatching eggs, nursing newborn fry, or separating fish for domestication, this box is the smart, simple solution. Made in Mainland China.

Key Features

• Enhanced Fish Breeding: Ideal for breeding, isolating, or domesticating fish. The fine white mesh construction provides a clear view of your internal aquarium ecosystem while keeping fish safe and secure.
• Hassle-Free Installation: Attaches easily to any aquarium wall via the included suction cup. The sturdy PP frame pillar ensures stability, so the box stays firmly in place at all times.
• Fry Protection: Keep aggressive fish separated from vulnerable fry and small juveniles, dramatically improving survival rates during breeding cycles.
• Ultra-Fine Mesh Design: The 1mm mesh aperture creates a protected breeding environment while preventing impurities and debris from entering the breeding zone, supporting healthy fish reproduction.
• Nurse Tank for Shrimp & Small Fish: Perfect for isolating shrimp and delicate fish from larger, aggressive tank mates — promoting a healthier, safer aquarium habitat overall.
• No Electricity Required: Completely passive design — no pumps, no power, no hassle.

Specifications

Package Contents

• 1 × Fish Breeding Isolation Box (choice of Small or Large)

Note: Due to different lighting and screen settings, the item color may appear slightly different from product images. Please allow a 1–2 cm difference due to manual measurement.

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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 (6.3 × 5.51 × 5.91 in), making it ideal for nano tanks or isolating shrimp and small fry. The Large size measures approximately 26 × 15 × 16 cm (10.24 × 5.91 × 6.30 in), offering more space for larger broods or multiple juvenile fish. Choose based on your tank size and the number of fish you need to separate.

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

A: The breeder box attaches quickly and securely to the inside wall of your aquarium using the included suction cup. The rigid PP frame provides stability, keeping the box firmly in position even with active fish inside. No tools or drilling are required.

Q: Is the mesh safe for newborn fry and shrimp?

A: Yes! The ultra-fine 1mm mesh aperture is specifically designed to contain even the smallest fry and shrimp while allowing natural water circulation throughout the box. This keeps the water fresh and oxygenated without letting tiny inhabitants escape or be reached by aggressive tank mates.

Q: Does this breeder box require electricity or a pump?

A: No — this breeder box is completely passive and requires no electricity, pump, or additional equipment. It works through natural water flow passing through the fine mesh walls, keeping your breeding environment clean and well-circulated without any power source.

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.