Two days ago my mum and I went to the fish shop to buy some sand. Anyway my mum got side tracked and had a look at the betta girls, there was a really nice looking one and despite me telling her that she couldn't go in with my fish she bought it.
We put her in a guppy breeder tank in my 5g tank with my other female. They started flaring at each other and what not. On Sunday we put them in with each other with the intention of taking my Mum's fish out straight away. They fought only once which involved a lot a fin slapping so i tool my Mums fish out straight away and set up a new tank.
After a day in the new tank my Mum's fish's lips have gone really think and white, I think it is mouth fungus but im not sure, can anybody shed light on this ?
(I know she shouldn't have gone in a 5g with another female but i couldn't convince my mum of this