- Comprehensive application: versatile fish breeder box for isolating sick fish, short term rearing, and hatching various small fish species; practical for multiple aquarium setups. - Durable construction: robust ABS shell and rugged materials provide lasting protection and reliable performance for your aquatic pets. - Clear visibility for observation: high definition transparent material enables easy observation and precise tracking of fry development; suitable for scientific observation or family breeding with clear feedback. - Supports reproduction and isolation: significantly increases fry survival by protecting against predators; includes a separate isolation chamber for a motherfish to improve her survival chances. - Use scenarios: quarantine a sick fish in a community tank; rear and monitor fry or hatchlings in a protected environment; temporarily isolate a brooding motherfish during mating to enhance survival.