Hatchery Systems: Engineering & Procurement Scope
A hatchery is bought as a production protocol, not as a list of tanks. Fix species, stage-by-stage output and water conditions first, then specify each system so competing suppliers quote the same duty.
What does a commercial hatchery system package include?
A commercial hatchery package covers segregated broodstock holding with photoperiod and temperature control, spawning and incubation, larval rearing tanks, live-feed or weaning capacity appropriate to the species, source-water treatment (filtration plus UV or ozone), heating or chilling, oxygenation, monitoring and alarms, effluent handling, and zoned biosecurity. Each of these has a duty figure — flow, volume, temperature range, redundancy — that should come from the production protocol. Quoting without those figures produces packages that cannot be compared.
Scope to define before sourcing
Broodstock and spawning
Segregated tanks, photoperiod and temperature control, conditioning feed program, quarantine separate from production, spawning and egg-collection arrangements, and genetic record keeping.
Incubation and larval rearing
Incubators or conical larval tanks sized to batch plan, gentle aeration, green-water capability where the species needs it, and tank surfaces and drains suited to frequent disinfection.
Live feed and weaning
Marine finfish and shrimp normally need microalgae, rotifer or artemia capacity sized above peak larval demand. Freshwater species usually wean earlier onto dry diets. Specify which applies before quoting hall space.
Water treatment
Source characterisation, mechanical filtration, cartridge polishing, UV or ozone, temperature control, and partial or full recirculation loops per zone with defined makeup rates.
Monitoring and controls
Dissolved oxygen, temperature, salinity, pH and TAN on critical tanks, SCADA or PLC with mobile alarms, and defined manual sampling for microbiology and larval health.
Biosecurity and redundancy
Zoning between broodstock, larval, weaning and nursery, air locks and foot baths, effluent disinfection, backup power and backup oxygen with stated hold-up time.
Decisions and the evidence to request
| Decision | What to compare | Evidence in the RFQ |
|---|---|---|
| Water architecture | Flow-through, partial reuse or segregated RAS loops per zone | Source water analysis, treatment duty, zoning plan, discharge route and redundancy |
| Live feed | In-house algae, rotifer and artemia versus earlier weaning | Peak demand by stage, contamination controls, backup capacity and training scope |
| Temperature control | Heat pumps, boilers, chillers or heat recovery | Design ambient range, target tank temperature and annual energy assumption |
| Scope boundary | Equipment supply, supply plus installation, or full EPC | Battery limits, commissioning, training, spares and acceptance criteria in writing |
RFQ checklist
- Species, stages and monthly juvenile output plan
- Source water analysis and available flow
- Tank schedule by stage with volumes and counts
- Temperature, salinity and oxygen design conditions
- Live feed or weaning requirement per stage
- Biosecurity zoning and effluent treatment requirement
- Power availability, backup power and backup oxygen hold-up
- Battery limits, commissioning, training and spares scope
Where this stage sits
- 01
Planning
Species, juvenile output by month, water source, site and procurement assumptions.
- 02
Species & seed
Seed specification, broodstock provenance, health status and documentation to request.
- 03
Hatchery systems
Broodstock, incubation, larval tanks, live feed, water treatment and biosecurity scope.
- 04
Nursery
Weaning, grading, nursery density, survival assumptions and transfer size.
- 05
Grow-out handoff
Match juvenile size, batch timing and volume to the grow-out stocking plan.
- 06
FCR & feed
Test conversion, feed budget and the economic impact of FCR before sizing feed supply.
- 07
Equipment
Build one package across pumping, filtration, oxygenation, controls, live feed and dispatch.
- 08
Cost
Separate civil works, equipment, energy, broodstock, labour, working capital and contingency.
- 09
Financing readiness
Score bankability before approaching independent third-party financing providers.
- 10
RFQ
Issue one controlled hatchery brief so qualified suppliers quote the same scope.
Questions buyers ask
Continue planning
Send the project brief
Share location, species and target production. Every brief is reviewed by a person before any supplier is approached, and supplier identities stay confidential until you approve an introduction.
Direct answer
What equipment is required for a hatchery?
A fish or shrimp hatchery needs broodstock tanks, spawning and incubation units, larval rearing tanks, live-feed production (algae, rotifers, Artemia), water treatment with filtration and UV, temperature control, oxygen and aeration, and biosecurity zoning. Output targets — larvae, fry or post-larvae per month — set the number and size of each unit, so quote the hatchery as one designed system.
| Stage | Main equipment | Critical control |
|---|---|---|
| Broodstock | Conditioning tanks, chillers/heaters | Temperature, photoperiod |
| Spawning & incubation | Incubators, spawning tanks | Water quality, disinfection |
| Larval rearing | Rearing tanks, aeration | Feeding, oxygen, hygiene |
| Live feed | Algae, rotifer, Artemia units | Culture stability |
| Water & biosecurity | Filtration, UV, footbaths | Zoning, pathogen control |
How do you work out the hatchery system?
- Set monthly output (fry or PL) and species.
- Work back through survival per stage to broodstock needs.
- Size tanks, live-feed and water treatment per stage.
- Design biosecurity zones before placing equipment.
Worked example: Penaeid shrimp hatchery sizing (SEAFDEC planning figures)
| Target PL15–20 per month (example) | 10,000,000 |
| Tank volume (80–100 t per million PL) | 800–1,000 t of larval tanks |
| Survival nauplii → PL (30–40%) | 10,000,000 ÷ 0.35 ≈ 28,600,000 nauplii |
| Stocking (50,000–80,000 nauplii per t) | 28.6 M ÷ 65,000 ≈ 440 t stocked per batch |
| Broodstock (7–8 pond-sourced per million nauplii) | ≈ 200–230 spawners per batch |
Example output; ratios are SEAFDEC planning figures for penaeid (e.g. tiger shrimp) hatcheries where larval tanks double as nursery tanks. Fish hatcheries use different ratios.
What are common hatchery system planning mistakes?
- No separate live-feed capacity — FAO/NACA size algal tanks as a ratio of larval tank volume.
- Biosecurity added after the layout is fixed.
- Sizing on best-case survival instead of the 30–40% planning range.
What should I send suppliers for a hatchery system quote?
- Species and monthly output (eggs, fry or PL)
- Broodstock source (wild, pond, SPF)
- Stage survival assumptions
- Water source and salinity
- Building, power and scope incl. training
What are the limits of these figures?
Ratios come from SEAFDEC extension guidance for penaeid shrimp; survival and output vary by species, broodstock and team skill, so suppliers and hatchery biologists confirm the design.
Sources: SEAFDEC/AQD, Hatchery of penaeid shrimps: 80–100 t tank per million PL, 30–40% survival, 50,000–80,000 nauplii/t, 7–8 pond broodstock per million nauplii; FAO/NACA, Shrimp Hatchery Design, Operation and Management — sizing by species and production target; algal-to-larval tank ratio
Before you request quotes
Equipment scope
What equipment does a commercial aquaculture project actually need?
A grow-out project typically needs holding infrastructure (tanks, ponds or cages), water movement (pumps, piping, valves), aeration or oxygenation, water treatment appropriate to the system, feeding equipment, grading and handling gear, monitoring and alarms, and backup power. RAS adds mechanical filtration, biofiltration, degassing, disinfection and tighter process control. Hatchery and processing scopes are specified separately.
Which equipment should be specified before requesting quotes?
Specify the items whose sizing changes everything downstream: design biomass and stocking density, water exchange or recirculation rate, oxygen demand at peak temperature, and installed pumping head. With those four fixed, suppliers can quote aeration, filtration, pumps and power on the same basis. FishMatch calculators produce these figures and attach them to the RFQ.
Can equipment be sourced in stages?
Yes, and phased procurement is common. The usual sequence is water supply and holding infrastructure, then aeration and treatment, then automation and monitoring, then processing and cold chain. Staging works when interfaces and capacity headroom are defined at the start; otherwise later phases force replacement rather than addition.