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Neon tetra growth

Subject: Neon tetra growth
by Corinna on 1/7/2020 18:30:12

Hi guys,

And nice to meet you since I am new to the forum! :)
Would really appreciate some input from you for one of my neon tetras. It has developed a red growth on its mouth (see picture attached). It has actually grown more within the last week.

I bought Melafix for bacterial infections but haven't seen any improvement in the last 3 days.

Have you come across anything like this before and do you have any advice?

Many thanks,