The Puffer Forum

I came home to find one of my Spotted Congo Puffers looking very sluggish and she has some odd tan fuzzy spots on her. I am not sure what to do so I have moved her to a hospital tank to keep her safe from the other puffers. She was in a 75 gallon community tank with 3 other Spotted Congo Puffers, 2 Siamese Algae eaters, a Butterfly Pleco, 2 small Kribs, 2 Flag Fish, and 1 Paradise. They have all been together for months now with no problems except I caught my puffers mating a couple days ago. The Ammonia is 0, Nitrites 0, and Nitrate is 0. The tank is cycled and has been for months now I just have it heavily planted. Has anyone else seen this before and can you help me figure out what it is please? To me it looks like wounds but maybe it is an illness that I have just not seen. She is very sluggish and didn’t want to eat today. The other Puffs and fish are all looking good

What test kits are you using? You should be showing some nitrate.
If they were just breeding, it could be bites from their mate.