Coral Trout Aquaculture Example

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Coral Trout Aquafarming & Aquaculture

Seychelles Aquaculture Project Overview Plan

Aquaculture Project Outline

 

 

 


The following outline describes a recirculating aquaculture design proposed to achieve the aquaculture goals of Mr Joe Da-Fisho. He has identified the concept of land based farming of valuable reef species, such as the coral trout for sale into the highly lucrative Asian export market.


The proposed aquaculture development has been carefully researched and designed to achieve commercial culture these reef fish species using recirculating aquaculture technology and systems. The main targeted species is the local coral trout, Violet Coral Trout (Plectropomus pessuliferus).

The example aquaculture design focuses on achieving approximately 100 tonnes of export production per year with a 4 phase construction and development plan spanning 18 - 24 months.

The project will commence with the construction of 20 x 50 tonne growout tank systems which incorporate individual bio-filtration and solid waste removal filtration. All tank designs have been tested and obtain high levels of self cleaning. This particular design compliments the unusual characteristic behaviour of coral trout and the flow found on reef edges where they are known to congregate.

The initial stock for the project will be wild caught juveniles from the local region.

However, although breeding of coral trout is successful in other parts of the world no work has been carried out on this particular species and the actual requirements and growth analysis has yet to be done. The use of wild caught stock will be invaluable to the progress of this specific species culture and commercial breeding and growout protocol development.

In respect of that, trials are about to commence here in Australia to further developed commercial growout protocols. To-date, and to the best of the authors knowledge no recirculating aquaculture has been done with coral trout species. The author has however successfully spawned and researched commercial applications both in Australia and in Fiji and strongly believes it to be an excellent species for recirculating aquaculture.

Aquafarming News 31-10-08

Primary Industry and Fisheries Minister Tim Mulherin today toured the Northern Fisheries Centre where DPI&F researchers are developing techniques with enormous potential benefits to Queensland.

 

Mr Mulherin said: "Captive breeding can help protect wild stocks while at the same time injecting millions of dollars into the Queensland aquaculture industry.

 

"Today I can announce that 30 of Australia's first captive bred coral trout have recently been sent to a Bowen commercial farm we are partnering with.

 

"The fish, about six months old and 20cm long, will be grown out and used for breeding future generations of captive bred coral trout.

 

"DPI&F scientists are working closely with our industry partner to monitor the ongoing growth and health of these trout in the commercial environment.

 

"The in-farm trial will allow us to transfer our growing techniques and expertise to a commercial operating environment.

 

"This great achievement means this highly-prized Queensland fish can be bred in aquaculture facilities without drawing stocks from Queensland's wild populations.

 

“Most species of reef fish have a growth rate expectation up to 3kg per year.
Variation of results occur relative to culture method, species and stocking
density).

Feed is usually calculated on a ratio of 1:1.2 and quality feed will cost
approximately $1500 AUD per tonne.

The cost of running a hatchery is a difficult question. Assuming one
spawning stocks the farm and one or two spawnings can be on-sold the hatchery
should require 2-3 people over 3-5 months with a power consumption of 70 to
100 kwh per day”.

"The Indonesians have and are having some success with breeding and grow out
culture however the species is still undomesticated and suffers from
associated culture problems".

However it remains the most expensive and potentially lucritative species
for RAS aquaculture so far.


So its potential from a hatchery point of view is quite significant”.

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