MainStream Aquaculture Queensland is a rapidly growing aquaculture business that produces premium and sustainably farmed Barramundi (Lates calcarifer) in Far North Queensland.
We are seeking a self-motivated, reliable and passionate Senior Fish Health Technician with strong technical expertise in fish health diagnostics, laboratory coordination, parasite detection and algae identification.
You will work closely with the management and operations teams to ensure the smooth delivery of all aspects of our fish production operations at the Killaloe Farm, while playing a key leadership role in monitoring, diagnostics and team development.
Why Join Us?
Be part of a close-knit, dedicated team producing premium, sustainably farmed Barramundi in tropical Far North Queensland.
Apply and further develop your specialised skills in microscopy, parasitology, algae management and laboratory coordination within a rapidly growing aquaculture business that offers real opportunities for career development and progression.
Work outdoors in a dynamic, fast-paced environment where your expertise directly supports sustainable food production.
Enjoy consistent day shifts that support a strong work-life balance.
Senior Fish Health Technician Responsibilities include:
Leading routine water, environmental and advanced fish health testing, including proficient microscope use for parasite detection and identification (e.g. gill parasites such as Cryptocaryon).
Coordinating laboratory activities, including sample collection and processing, equipment maintenance, diagnostic workflows, data recording and quality standards for lab operations.
Identifying,



monitoring and contributing to the proactive management of algae in production ponds, including species recognition and early intervention strategies.
Feeding and maintaining healthy fish stocks with a strong focus on fish health management and early intervention.
Executing daily production plans.
Maintaining accurate data, documentation and reporting to a high standard, including fish health records and laboratory results.
Mentoring and training technicians on laboratory techniques, microscope use, parasite detection protocols and standard operating procedures.
Maintaining a safe and clean work environment.
Pond monitoring and oversight of farm production operations.
Adhering to Standard Operating Procedures, Food Safety, Animal husbandry and Workplace Health & Safety Systems and quality assurance regulations to ensure a high standard of operation.
Manage laboratory inventory and stocktakes.
Preferred Professional experience
Proven experience as a Fish Health/Aquaculture Technician (or equivalent) in a commercial barramundi or marine finfish farming operation.
Strong hands-on experience and demonstrated competence in microscope use for parasite detection and identification.




In-depth practical knowledge and experience in algae identification and management in aquaculture pond systems.
Experience coordinating or working within a laboratory setting in aquaculture or a similar primary production environment.
Excellent team orientation with robust oral and written communication skills and the ability to mentor and coordinate with colleagues.
A strong sense of personal accountability, responsibility and attention to detail.
Flexibility to support varied tasks and production needs.
Australian resident or currently hold a valid visa with long term work rights in Australia.
Desirable Requirements:
Previous experience in a lead or senior technician role (highly regarded).
Current C Class manual driver's licence and reliable vehicle.
Forklift licence.
Previous experience operating farm machinery and equipment.
Reside in (or be willing to relocate to) the local Far North Queensland area.
Formal qualifications or training in aquaculture, aquatic animal health or laboratory techniques.
To apply:
Prospective candidates are required to submit
A resume and a cover letter
2 reference checks
Please clearly indicate in your application that you are applying for the Senior Fish Health Technician – Killaloe position.
In your cover letter, please include commentary on your experience with microscope use, parasite detection, algae identification and laboratory coordination, as well as your interest in contributing to Mainstream Aquaculture's operations at the Killaloe Farm.
Successful applicants will be contacted for further information.
For more details about Mainstream Aquaculture check out

📌 Senior Fish Health Technician (Queensland)
🏢 Mainstream Aquaculture
📍 Queensland