Hi everyone, thanks for all your nice comments!
In answer to some of your questions:
Laura & Reann, I used a Samsung Digimax 300 - 3.2 mega pixels. My Fiance got in in Melbourne when she was over there a couple of years ago. I can't remember what she paid at the time but from a quick trawl of the web it looks like you can get them for about $325 Oz Dollars, which is about $237 US or £136 UK.
As Joan says if you're using a flash try and point it at an angle where possible. Probably you'd get the best results with the light on in the tank (which they're not overly keen on!) and using a high shutter speed on your camera and using a macro lens if you've got lots of money! Taking photos through glass is generally a bit of a nightmare though!
Jenny, the Juwel filters do put out quite a bit of current but I've angled the output tube straight down onto a plant/rocks and that defuses it considerably, most of the tank is practically still.
Finally some more pics of Miguel or should that be Miguela?!
I love this pic but I had the camera on the wrong setting so it's not as clear as the others, it's such a heroic pose!!