by WarrenH » Thu 23 Sep, 2010 1:57 pm
Eddie, good stuff. How big are these Blue Claws, could you tell?
I'm guessing that the Yabbie in the photo is about 5-6 years old. Yabbies will normally survive/live in good conditions of much territory and good shelter, up to 7 years. Some have been known to be 12 years. I have seen a report of a life span of Yabbies up to 20 years.
The Yabby in the shot is a beautiful looking Yabby, it has excellent colouring. I've seen Yabbies in streams in the Blue Mountains as red as cooked Lobsters. Truly extraordinary.
My Blue Claws that I keep at home, have the similar red marginata. On Tim Brennan's site 'Bushwalking NSW' at the bottom of the home page, in 'Cannyoning' Tim has a photo of an all red-orange Yabby taken in one of the Blue Mountains' Canyons, see 2002/2003 Du Faur Creek Canyon. This gives a good comparison to what you saw.
I like Yabbies, I keep Yabbies as a hobby. I name them all, like all family pets get named. They are my beloved pets ... until they are pan sized at about 200-260 grams.
I watch my Yabbies' diet closely. Being both omnivorous and serious cannibals, yet the literature most often calls them herbivorous, and they are herbivorous, that will eat out mega pond weed and any rotting vegetation pronto ... if you want to catch a Yabbie, use a bit of pear. For years I thought that the best baits were, raw meat, raw prawn, blood worms, fish meal, carrots or peas (the latter baits carefully sinkered down).
... but just recently I tried some over-ripe pear. Yabbies do prefer rotting vegetation. Giving them the pear created a take-no-prisoners battle in one of my tanks between all of the Yabbies, fighting all at once, for a one cubic cm bit of pear.
If you catch Yabbies on NSW Crown Lands, having a NSW recreational fishing licence is recommend. About $30 per year, and cheaper for several years. The bag limit is 200 per day or 200 saved. The legal traps are on the Fisheries' site. There is no legal size limit for Yabbies in NSW, which I think is totally wrong. If they aren't over 12cm length overall ... do toss them back.