Australian Aquatic Biological

Australian aquatic biodiversity research and consultancy

Yabby Farming Field Day – Karuah NSW – “Yabby Dabba Doo” Yabby Farm – 8th August 2015

A Yabby Dabba Doo/CSIRO Super Yabby

A Yabby Dabba Doo/CSIRO Super Yabby

NSW Aquaculture Association in partnership with “Yabby Dabba Doo” Yabby Farm and Aquatic Engineering Australia is holding a yabby farming field day on Saturday the 8th August, 2015. Everyone is invited to share in this education and information day.

The days theme, is the commercial aquaculture of yabbies (Cherax destructor) in purpose built earthen yabby ponds. Join us around the ponds to see how they are constructed to suit the yabbies requirements for maximum production. These are not farm dams but commercial yabby ponds. See how to construct commercial earthen ponds, control their overflows and make the ponds gravity drainable at minimal cost.

Cooked, "Yabby Dabba Doo" Yabbies

Cooked, “Yabby Dabba Doo” Yabbies

Once yabbies are captured they need to be held ready for sale. You need somewhere to store yabbies for a week or two ready for sale and be able to purge the yabbies on demand. See a simple commercial purging recirculating aquaculture system in operation; see how it’s constructed and how you can build yours at home. Discuss the pros and cons of this basic construction with Paul Van der Werf, one of Australia’s leading experts on recirculating aquaculture systems.

Commercial Yabby Ponds

Commercial Yabby Ponds

When you start growing commercial quantities of yabbies at densities far greater than that which occurs naturally in nature then perimeter fencing of your ponds becomes an important priority. Commercial yabby ponds need external perimeter fencing to ensure yabbies don’t wander from the ponds and to keep predators like turtles and eels from getting into the ponds. Join us to see the fencing and discuss the options and requirements.

One of the major predators of yabbies are birds. The main culprits are cormorants or shags which can devastate commercial yabby ponds. The easiest remedy is to net your ponds. Join us on the day around the ponds to see the bird netting erected over the ponds. See how it’s erected, and discuss alternatives with the experts.

First thing in the morning we will be setting traps in the ponds. We will be using a variety of traps from those used by recreational fishers to the special traps only used by commercial farmers. The traps will range in size from the small box traps for catching small bait yabbies to the large super traps for catching bulk loads of 20-50 kgs/trap. Later in the day we will harvest the yabbies from the traps. See how it’s done and what you can catch in the different traps.

A commercial pond with bird netting over and hides within the pond

A commercial pond with bird netting over and hides within the pond

For commercially viable yabby production you need to add shelter to the ponds. Yabbies only use the floor of the pond which limits the number of yabbies which can physically survive in the pond. If you add shelter to the pond you can double, triple or quadruple the production from that pond. Join us to see the types of shelters used and how they are set for easy removal from the ponds and additionally used for juvenile harvesting etc.

Small Bait Yabbies

Small Bait Yabbies

A clean reliable water supply is an essential requirement for any commercial aquaculture facility. Aquatic Engineering Australia will be demonstrating their “Ultra Filtration Mobile Unit”. Join us to see the unit in operation with demonstration of its sediment removal capability. See how this demonstration unit can turn turbid dam water into clear, clean water.

Our Aquaculture Policy Officer from Fisheries NSW will be there to discuss the government requirements in getting started. Find out all you need to know and it’s a great opportunity make contact with the man you will need to lodge your application with.

Once you have grown and harvested your crop of yabbies, you will need to sell it. See the different size yabbies the different markets require. Discuss the markets for each size and grade of yabby, and the current market prices for your produce. Learn where you can sell yabbies and what you can expect in return for your produce.

This is a great opportunity to meet with some of Australia’s leading industry experts. All are there to answer all your questions. (Industry consultants can charge $100-200/hr for consultancy; you have them there at no extra charge so make good use of them).

There will be drinks and a sausage sizzle or similar after the event so another opportunity to stay back and network.

Key speakers include:

Jamie Williams, Owner of “Yabby Dabba Doo” Yabby Farm and “Marron-U-Wanna” Marron & Koi Farm in WA.

Rob McCormack, Research & Aquaculture Director, Australian Aquatic Biological P/L and Secretary NSWAA.

Paul Van der Werf, Director, Earthan Group and President NSWAA.

Graeme Bowley, Aquaculture Policy Officer, Fisheries NSW.

Chris Young, Aquatic Engineering Australia (AEA)

Tickets are available now, only limited attendees so order now before sold out.

Members $35

Members Partners $15

Non Members $50

Non Members Partners $25

Plus a $1 fee/ticket

Pre registration is essential.

Bring your gum boots and umbrella if its wet.

To Purchase Event Tickets “Click Here”

To download and Event Program “Click Here”

As secretary of the NSWAA  l’ll be running a Yabby Farming information and education day at “Yabby Dabba Doo“, hope to see you all there.

 

 

The White Cloud Mountain Minnow Tanichthys albonubes

Australian Aquatic Biological P/L Report 100056-8 to Gosford City Council included a survey of Green Point Creek at Pearl Beach, NSW. The creek was surveyed at the crossing on Diamond Road.

Green Point Creek

Green Point Creek

Here the creek here was strongly flowing over a sandy stream bed. There were shallow areas and deeper holes. The banks had some rock retaining walls but were well shaded with ferns and palms, etc. The creek was extremely healthy with abundant aquatic species present. Some plague minnows Gambusia holbrooki were present, we observed a small long finned eel, several flat headed gudgeons, many striped gudgeons and common jollytails.

The striped gudgeon Gobiomorphus australis

The striped gudgeon Gobiomorphus australis

The common jollytail Galaxias maculatus

The common jollytail Galaxias maculatus

Further upstream at Tourmaline Avenue the creek was surveyed again, here the stream was again sandy based with deeper holes and looked in excellent condition. We surveyed the stream finding only dozens of striped gudgeons and surprisingly the White Cloud Mountain minnow Tanichthys albonubes. The White Cloud Mountain minnow is an exotic freshwater fish. It is a species that would normally be found in a fish tank so it is alarming that this exotic species is established in numbers within this stream. It is a robust species and a member of the carp family being a native of China. Their robust nature and bright colouration makes them popular as an aquarium species and they are not normally found in natural waterways of NSW.

The White Cloud Mountain minnow Tanichthys albonubes

The White Cloud Mountain minnow Tanichthys albonubes

I did some research on this species and found that, NSW DPI has known about this feral population since late 2002 and continues to monitor the situation. Unfortunately, one of the specimens collected was gravid so conditions were suitable for breeding which is a big worry. Discussions with residents in the area report Australian Bass and eels in the deeper holes and freshwater crayfish further upstream.

White Cloud Mountain minnows from Green Point Creek, Pearl Beach, NSW

White Cloud Mountain minnows from Green Point Creek, Pearl Beach, NSW

Discussions with the Australian Museum also record this species from Piles Creek at Somersby, NSW. We did a preliminary survey of this creek specifically targeting the White Cloud Mountain Minnow but were unable to find it. That does not mean it’s not there however, it does indicate that it’s not proliferating well and numbers are either very small or scattered, etc. Unfortunately, we did find invasive Cherax destructor proliferating in the stream so that was not so good news.

The yabby Cherax destructor from Piles Creek, Somersby NSW

The yabby Cherax destructor from Piles Creek, Somersby NSW