Its is christmas and I don't know what to do.
I am very very new to owning fish, i got given a neglected tank (it tiny, less than 5gallons) and got given some advice on how to look after it. I replaced the filet and bought some better food for them a week ago then after a week I cleaned the gravel, and replaced a 1/3 or the water. then the next day I come home and one of the fish (a neon tetra) has a giant lump!!!!!
its like a see through white blister.
it takes up his whole top part of his mouth, he cant really eat I don't think, he can open his mouth a little
then I noticed that one of the other fish (another neon tetra)has a smaller lump on the top of his mouth.
Did I do something wrong?
I cant go out and get anything to help them as it is christmas, I hope someone can help me.
The only things I know about the tank are this;
it is under 5 gallons,
it has too many fish, 5 neon tetras and a molly, plus what we think is a baby molly
I have added some salt (a tiny bit, I was told to by someone, they said it was good for the molly)
I have used stress coat and stress zyme (I know they aren't great, but it was all i had)
There are no plants in the tank.
I hope someone can help me and my Fish