That is a stonker mate!! I have only seen 2 before and both I had caught in the castnet. they are apparently a weed feeder so even better getting him on something different
the more common stripped or Silver Scat is a more common catch and also hurts like crazy when spiked Next time your in a Aquarium shop have a look as they sell both Scats converted to fresh, Silvers are usually around $20 for one 10-15cms long, the red ones (like yours) are worth nearly double that for the same size :O
cheers
Brandon...