Abstract
This chapter details the design and operation of modern marine fish hatcheries, integrating engineering principles with biological requirements and biosecurity standards to optimize productivity and animal welfare. Core components include intake systems, filtration, quarantine, maturation, incubation, live-feed production, larval rearing, and nursery systems—each designed as functionally isolated units to ensure strict biosecurity. Hatchery layouts emphasize hydrodynamic optimization, water-quality management, and flexibility to accommodate species-specific needs. Both flow-through and recirculating aquaculture systems (RAS) are described, alongside innovations in self-cleaning larval tanks, filtration technologies, and automated monitoring and control systems. Species-specific maturation and spawning protocols are reviewed for cobia, Seriola spp., flounders, snappers, mahi-mahi, and tunas. Emerging research on microbiome management is presented as a frontier for improving larval survival and robustness. Collectively, these design frameworks support sustainable, high-performance hatchery operations for advanced tropical and subtropical aquaculture.