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Discussion Starter · #1 ·
Hi, I'm new to planted aquariums and haven't had rasboras before.

I have had 10 Harlequin Rasboras for just under a month now. They have been doing really well, but I just noticed that one has growth on its mouth and another has a white fin on one side. I'm not sure what this is or is causing it. It doesn't seem to be affecting them at all, and I haven't noticed anything like this on the others.

Should I be concerned and is there a way I should treat this? I have attached a couple of photos showing the issue.

Thanks :smile2:


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