hey thanks heaps guys...
He was climbing up and resting on things, like the air filter and the tubes, but he looked as if, like Amy said, he couldn't reach the bottom with ease. So maybe it was gas..is that very dangerous? But today is much cooler, and he seems a lot happier; he is sitting on the bottom again!
They are in a 100litre tank. Oh and I have only been feeding them axolotl pellets.
Oh the fungal treatment was one my friend gave me with the fish..but it does have malachite green in it...
is that bad for them? I presumed since my friend said to use it if they got sick it would be alright for them...
thanks for the help