
![]()
![]()
![]()
![]()
You are viewing the Asia Pacific News Edition
Choose the news you want to read
View the site in World Edition, North American News Edition
European News Edition or Asia Pacific News Edition

View full financial data |
Clean Seas Tuna Limited is an innovative state-of-the-art South Australian aquaculture enterprise, with strong links into the Tuna Fishing and fish farming industries. Clean Seas’ operations are situated in Port Lincoln, Fitzgerald Bay, Port Augusta and Arno Bay where our main onshore complex operates on a 400 hectare site. Clean Seas’ core business is the propagation of commercially bred Southern Bluefin Tuna, Mulloway and Kingfish for the domestic market and international consumption.
Using what is believed to be the only captive broodstock in the world, the team at Clean Seas are developing a commercial on-shore breeding facility. This is a major step towards realising the company’s long held goal of closing the life cycle of Southern Bluefin Tuna. When successful, within a decade this process could double the Southern Bluefin Tuna catch, without impacting on wild tuna stocks.
Clean Seas Tuna Limited has mature Southern Bluefin Tuna broodstock and direct access to the skills and expertise of its parent company and main shareholder -The Stehr Group. The Stehr Group was established in the early 1970’s and is recognised as an Australian leader and International pioneer in tuna fishing, ranching and offshore fish farming.
In 2004/2005 The Stehr Group produced in excess of:
* 650 tonnes of farmed Southern Bluefin Tuna.
* 600 tonnes of aquaculture-bred Kingfish.
* 200 tonnes of aquaculture-bred Mulloway.
Clean Seas Tuna is the first company in the world to successfully transfer large Southern Bluefin Tuna over large distances to its on shore facilities in Arno Bay.
Assets and Capabilities
Clean Seas assets include:
* 400 hectare site at Arno Bay.
* Mature Southern Bluefin Tuna broodstock, Kingfish and Mulloway.
* Kingfish and Mulloway broodstock facilities.
* 2 large finfish hatcheries capable of producing up to 1.2 million fingerlings
per annum
* Seawater supply system which includes a 4 megalitre retention dam.
* Two x 50 metre x 20 metre x 2 metre flow-through grow out ponds.
* Standby generators.
* Four employee houses.
* Office complex.
* 2 large industrial storage sheds used to store thousands of tonnes of feed.
* 10 hectare Southern Bluefin Tuna holding licence.
* 20 hectare 300 tonnes grow-out licence for either Kingfish or Mulloway.
* State-of-the-art Tuna broodstock facilities.
OUr Markets
Clean Seas Products are exported across the world to countries including:
* United States
* United Kingdom
* France
* Italy
* Switzerland
* Netherlands
* Spain
* Germany
* Japan
The demand for Clean Seas’ product is greater than its ability to supply fish. This is due to the declining world-wide fish stocks and a growing global preference for Australia’s “Clean and Green” seafood.
Southern Bluefin Tina Program
Introduction
Found in the Southern Hemisphere, Southern Bluefin Tuna are a large and fast-swimming pelagic fish. Southern Bluefin Tuna exist largely in the world’s southern oceans and congregate in the costal waters off southern Australia.
They spawn between September and April each year in the only known spawning grounds in the Indian Ocean, between the north-west Coast of Australia and Indonesia. The eggs are estimated to hatch within two to three days.
At approximately 20 days, the Southern Bluefin Tuna larvae become fingerlings, which feast on a wide range of food, including fish larvae and juvenile fish.
Southern Bluefin Tuna usually reach approximately 15 kilograms over the next two years and this size is the principal wild catch of the Australian Southern Bluefin Tuna industry.
Clean Seas believes that Southern Bluefin Tuna become sexually mature between 9 and 12 years of age in the wild.
History of Southern Bluefin Tuna Catch
The population has decreased over the past 50 years due to the increasing demand from overseas markets. Improved refrigeration techniques in the mid 1960’s paved the way for the transportation of fresh Southern Bluefin Tuna across the world.
Until the late 1960’s, the majority of Australian Southern Bluefin Tuna were either caught the Eden/Ulladulla region of New South Wales or in Port Lincoln, South Australia. During the 1970’s almost all of the Southern Bluefin Tuna fishing companies moved permanently to Port Lincoln.
The world Southern Bluefin Tuna catch was approximately 80,000 tonnes per year in the early 1960’s – and by the mid 1960’s it had plummeted to 60,000 tonnes. During 1980, the catch had declined even further to 40,000 tonnes a year.
This sharp decline was soon recognised by the fishing countries of Japan, Australia and New Zealand, and a voluntary catch quota was enforced.
Despite these protective measures, numbers still continued to decline and in 1989 the three countries reduced the quotas even further to their current levels of 11,750 tonnes between them.
The arrangement between the countries was formalised in 1994, when the Commission for the Conservation of Southern Bluefin Tuna (CCSBT) was formed.
The current quota for CCSBT members are 14,030 tonnes per year of Southern Bluefin Tuna.
Current Southern Bluefin Tuna Production
Juvenile Southern Bluefin Tuna fish weigh an average of 15 Kilograms and are caught from December to April each year. The Southern Bluefin Tuna are then “grown-out” in sea pontoon cages for three to eight months, reaching an average of 30 to 40 kilograms. The fish are then exported either fresh or frozen to Japan. With the future propagation of Southern Bluefin Tuna at its Arno Bay hatchery, Clean Seas is poised to capitalise on many lucrative international markets through its specialised aquaculture endeavour. The successful closing of the Southern Bluefin Tuna life cycle by Clean Seas to produce unrestricted large additional tonnages of this valuable fish to supply a growing global demand for Southern Bluefin Tuna and other high quality aquaculture based products.
Australian Supply of Southern Bluefin Tuna
The majority of Australia’s Southern Bluefin Tuna quota is farmed in waters of Port Lincoln. Boasting a farm gate value of $242 million, the total weight of Port Lincoln tuna farmed output increased to 9,290 tonnes of tuna in 2003-2004.
The Hatchery
State-of-the-art, world-class and innovative – Clean Seas’ Arno Bay hatchery impresses all who have passed through its doors. Clean Seas acquired the hatchery in November, 2000 and undertook a $2.5 million upgrade.
During this process Kingfish and Mulloway broodstock facilities were constructed, along with a live-feed production plant. The hatchery is staffed by highly trained technicians all with a great passion to succeed.
What Next?
Clean Seas is confident of the future potential for the aquaculture industry across the world. This view is evident by:

Clean Seas Products are exported across the world to countries including:
Australia
United States
United Kingdom
France
Italy
Switzerland
Netherlands
Spain
Germany
Japan
The demand for Clean Seas' product is greater than it's ability to supply fish. This is due to the declining world-wide fish stocks and a growing global preference for Australia's "Clean and Green” seafood.
| Mr Hagen Stehr AO | Chairman |
| Mr Marcus Stehr | Managing Director |
| Sir Tipene O'Regan | Non-Executive Director |
| Mr Ian McLachlan AO | Non-Executive Director |
| Mr Paul Robinson | Non-Executive Director |
| Mr Frank Knight | Company Secretary |
Company AddressPort Lincoln
|
Additional Address/Key ContactStehr Group Pty Ltd |