Agriculture & EnvironmentISCO 6221
Aquaculture cage technician
Aquaculture cage technicians operate in the production of aquatic organisms in water-based (freshwater, brackish water, salt water) on-growing processes in cages.
Check yourself in a minute: aquaculture cage technician
Rate 5 of the 38 essential skills of this occupation (European ESCO data). No account needed.
assess cage water quality
monitor fish mortality rates
monitor feeding systems
use water disinfection equipment
monitor larval growth
About aquaculture cage technician
As an aquaculture cage technician, you will be responsible for maintaining and operating fish farming cages in various water environments—freshwater, brackish, or saltwater. Your day-to-day work involves monitoring water quality parameters, observing fish behavior for signs of disease or stress, managing feeding systems, and maintaining the physical integrity of cage equipment. You will conduct regular health assessments of the fish population, screen for deformities, and respond quickly to any abnormalities in mortality rates or feeding patterns. Your role is critical to ensuring optimal growing conditions and maximizing the health and productivity of aquaculture stocks.
This position requires a practical, hands-on approach combined with a solid understanding of fish biology and environmental factors affecting aquatic organisms. You will work in challenging outdoor conditions, often on water, and must be comfortable with physical labor and equipment operation. The aquaculture sector in Poland is growing steadily, and skilled cage technicians are increasingly in demand as the industry expands. Career advancement opportunities exist into supervisory roles or specialized positions in health management or environmental control.
Key Work Functions
Core areas of responsibility for a aquaculture cage technician.
1
Water Quality Monitoring and Management
- Measure and record daily water quality parameters including temperature, dissolved oxygen, pH, and salinity
- Assess water currents and their effects on cage conditions and fish welfare
- Perform water disinfection and treatment procedures to maintain healthy aquatic environment
2
Fish Health Monitoring
- Observe and document abnormal fish behavior indicating stress, disease, or parasitic infestation
- Monitor fish mortality rates daily and investigate causes of any sudden increases
- Screen live fish for physical deformities and remove affected individuals when necessary
3
Feeding Operations
- Carry out daily feeding operations using appropriate feed quantities based on fish growth rates and appetite
- Monitor feeding system performance and address any mechanical issues promptly
- Track feeding behavior patterns to identify changes in fish health or environmental conditions
4
Equipment Maintenance and Operation
- Maintain and repair aquaculture cage equipment including nets, moorings, and support structures
- Operate lifting gears safely for cage maintenance and fish handling operations
- Maintain grading equipment and perform regular checks to ensure proper functionality
5
Pest and Disease Management
- Identify and respond to pest infestations such as sea lice or parasites affecting fish populations
- Apply preventive measures and treatments to minimize disease spread within cages
European Skills Framework
Skills and knowledge areas required for this occupation based on European classification.
Essential (38)
effect of water currentseffect of water currentsThe impact of water currents on fish farms, in cages, ponds, lagoons and rivers.pests and diseasespests and diseasesTypes of pests and diseases and the principles of spreading and treating them.fish biologyfish biologyThe study of fish, shellfish or crustacean organisms, categorized into many specialised fields that cover their morphology, physiology, anatomy, behaviour, origins and distribution.rates of growth assessmentrates of growth assessmentThe different methods used to evaluate the growth of most important cultivated species.operation of lifting gearsoperation of lifting gearsThe methods used to operate different types of lifting gears, such as winches, telescopic loaders, sea cranes, forklift trucks.assess cage water qualityassess cage water qualityAnalyse the quality of water by monitoring the state of temperature and oxygen, among other parameters.monitor fish mortality ratesmonitor fish mortality ratesMonitor fish mortalities and assess possible causes.monitor feeding systemsmonitor feeding systemsMake sure that feeders, feeding system and monitoring instruments are working. Analyse feedback from the instruments.use water disinfection equipmentuse water disinfection equipmentOperate equipment for water disinfection, using different methods and techniques, such as mechanical filtration, depending on needs.monitor larval growthmonitor larval growthMonitor the growth and health of the larvae.maintain grading equipmentmaintain grading equipmentSet up equipment and areas to effectively grade fish according to requirements. Maintain the equipment in a serviceable condition throughout the grading process. Clean and store the equipment after us...carry out feeding operationscarry out feeding operationsCarry out manual feeding. Calibrate and operate automatic and computerised feeding systems. Monitor animal feeding behaviour.maintain aquaculture cage equipmentmaintain aquaculture cage equipmentEnsure maintenance of aquaculture cage equipment, by carrying out tasks such as cleaning floats and arranging ropes in cages.perform water treatmentsperform water treatmentsPerform regularly water testing, ensuring that water management and filtration processes follow reasonable management practices, industry standards, or commonly accepted farming practices. Record prev...monitor fish health statusmonitor fish health statusMonitor the health of fish, based on feeding and general behaviour. Interpret environmental parameters and analyse mortalities.measure water quality parametersmeasure water quality parametersQuality assure water by taking into consideration various elements, such as temperature.observe abnormal fish behaviourobserve abnormal fish behaviourObserve, describe and monitor abnormal fish behaviour in respect of feeding, swimming, surfacing.monitor aquaculture feeding behaviourmonitor aquaculture feeding behaviourMonitor aquaculture feeding behaviour of farm animals. Collect information on the growth of the animals, and forecast future growth. Assess biomass taking mortality into account. Recommend improvement...manage wastemanage wasteManage or dispose of significant amounts of waste materials and/or hazardous materials, in accordance with legislation, thereby respecting environmental and company responsibilities. Ensure required l...screen live fish deformitiesscreen live fish deformitiesExamine live fish, including larvae, to detect deformities related to body shape, jaw deformity, vertebral deformity and skeletal deformity. If not detected, these could lead to risks for fish, such a...carry out fish disease prevention measurescarry out fish disease prevention measuresCarry out disease prevention measures for fish, molluscs, and crustaceans for land-based and water-based aquaculture facilities.perform diving interventionsperform diving interventionsPerform hyperbaric interventions at a maximum pressure of 4 atmospheres. Prepare and review the personal equipment and the auxiliary material. Perform and supervise the dive. Realise maintenance of th...apply fish treatmentsapply fish treatmentsApply prescribed fish treatments under supervision, including assistance with vaccination immersion and injection procedures.control aquatic production environmentcontrol aquatic production environmentAssess the impact of biological conditions such as algae and fouling organisms by managing water intakes, catchments and oxygen use.operate small craftoperate small craftOperate small craft used for transport and feeding.maintain diving equipmentmaintain diving equipmentPerform maintenance actions, including small repairs, on diving equipment.carry out maintenance on cage equipment and machinerycarry out maintenance on cage equipment and machineryCarry out maintenance on cage equipment and machinery, such as containment systems, lifting gear, transportation gear, disinfection equipment.prepare for small craft operationprepare for small craft operationPrepare for personnel operation of small craft, both with licence and without licence.identify common aquatic species diseasesidentify common aquatic species diseasesIdentify common aquatic species diseases. Observe and describe common symptoms nd lesions.check diving equipmentcheck diving equipmentCheck diving equipment for valid certification to ensure its suitability. Ensure that any diving equipment is examined by a competent person before use, at least once on each day on which it is to be ...supervise cage net systemssupervise cage net systemsSupervise cage net changing and net repairs. Maintain and clean floats and mooring ropes.perform water chemistry analysisperform water chemistry analysisPerform water chemistry analysis to identify and quantify the chemical components and properties of water samples.swimswimMove through water by means of the limbs.implement fin fish feeding regimesimplement fin fish feeding regimesImplement daily fin fish feeding regimes to take account of environmental variations. Check feeding regimes are followed through the accurate implementation of feeding procedures. Implement adjustment...measure water flowmeasure water flowMeasure water flow, water intakes and catchments.fish gradingfish gradingThe method of how fish are graded according to their different characteristics: specification, size, quality and condition.preserve fish samples for diagnosispreserve fish samples for diagnosisCollect and preserve larval, fish and mollusc samples or lesions for diagnosis by fish disease specialists.carry out preparations for fish disease specialistcarry out preparations for fish disease specialistPrepare environment and equipment for fish disease specialist treatments, including vaccination treatments.
Optional (17) — show
rope manipulationrope manipulationRope manipulation which relates to knotting and splicing.maintain ropesmaintain ropesMaintain splices and knots in ropes.set up fish harvesting equipmentset up fish harvesting equipmentSet up fish harvesting equipment for the efficient slaughter of the fish and subsequent storage.speak different languagesspeak different languagesMaster foreign languages to be able to communicate in one or more foreign languages.maintain internal communication systemsmaintain internal communication systemsMaintain an effective internal communication system among employees and department managers.use different communication channelsuse different communication channelsMake use of various types of communication channels such as verbal, handwritten, digital and telephonic communication with the purpose of constructing and sharing ideas or information.perform fish grading operationsperform fish grading operationsGather live fish using techniques which minimise the stress caused to fish and avoid fish escapes occurring. Grade them manually or using equipment. Report on the grading operation, ensuring complianc...use communication devicesuse communication devicesOperate communication devices in order to interact with customers, colleagues, and others.make time-critical decisionsmake time-critical decisionsPursue optimal time-critical decision making within the organisation.maintain cage netsmaintain cage netsExecute cleaning, drying and storage of removed cage nets.harvest aquatic resourcesharvest aquatic resourcesGrade fish, molluscs, crustaceans manually and using equipment in preparation for harvesting. Harvest shellfish for human consumption. Harvest live fish for live transport. Harvest all species in a hu...handle harvested fishhandle harvested fishHandle harvested fish in a manner which maintains flesh quality. Effectively store fish in chilled storage.have computer literacyhave computer literacyUtilise computers, IT equipment and modern day technology in an efficient way.collect broodstockcollect broodstockSource broodstock from fisheries and held them in maturation tanks before collecting their seeds.ensure aquaculture personnel health and safetyensure aquaculture personnel health and safetyMake sure that health and safety procedures have been established and followed across all aquaculture facilities including cages. Ensure that personnel and general public are instructed and all work a...operate an emergency communication systemoperate an emergency communication systemEfficiently operate common communication systems used in emergencies, such as base station mobile transmitters and receivers, portable transmitters and receivers, repeaters, cellular phones, pagers, a...conduct fish mortality studiesconduct fish mortality studiesCollect fish mortality data. Identify causes of mortality and provide solutions .
Related Occupations
Occupations that need many of the same essential skills, so the move between them is shortest.
aquaculture husbandry technician14 shared essential skillsaquaculture harvesting technician13 shared essential skillswater-based aquaculture technician13 shared essential skillswater-based aquaculture worker11 shared essential skillsaquaculture recirculation technician10 shared essential skillsaquaculture husbandry manager9 shared essential skillsaquaculture rearing technician8 shared essential skillsaquaculture husbandry worker7 shared essential skills
Frequently asked questions
What does an aquaculture cage technician do?
Aquaculture cage technicians operate in the production of aquatic organisms in water-based (freshwater, brackish water, salt water) on-growing processes in cages.
What skills does an aquaculture cage technician need?
An aquaculture cage technician needs 38 essential skills, including effect of water currents, pests and diseases, fish biology, rates of growth assessment, operation of lifting gears.
Will AI replace aquaculture cage technician jobs?
The AI disruption score for aquaculture cage technician is 22/100 (low risk). Skills most exposed to automation: assess cage water quality, fish grading, measure water quality parameters. Most resilient: perform diving interventions, swim, maintain ropes.
AI Replacement Risk
22/ 100
Low Risk
Low riskHigh risk
Quick Facts
ISCO GroupMarket-oriented skilled forestry, fishery and hunting workers
Essential Skills38
What are you missing to work as aquaculture cage technician?
The free skill gap analysis compares your skills with what this occupation requires and shows where to start.
Check your gaps