Hey sorry its taken me so long to get back to you! Mine are in slightly brackish water on their own because of their temperments. My old ones were in a freshwater tank with an otocinclus; they tolerated him but I could see them eyeing him like he was something edible!
The marine tank is hard work and expensive! I've had it up fpr about 2 or 3 months now.I lost the Nemo clown fish the other day but I think it was age - I cannot identify any other reason. I've got some pics in the marine tank photos section so have a look. It's still very bare because I'm saving up for an RO kit and a protein skimmer before I add anything more. I cant wait to have a proper reef thing going tho! Just need to watch the pennies

I'm so glad with my live rock - i've managed to pick up some amazing little hitch-hikers! I think about 20 baby starfish and a couple of brittle stars

I find that every time I look into the tank there's something new - it's wonderous!