What is happening to his scales? This problem probably started a bit over a month ago, where his skin was like this but in a smaller area. It disappeared (or maybe i didnt look close enough) so i thought it was nothing. I came home after 1 month and noticed this. I googled but most of the pictures didnt seem to match what he has.
https://www.reddit.com/gallery/1qxa3li
Posted by lurkerdeer
3 Comments
Looks like ammonia poisoning
What are your tank parameters? This can happen with high ammonia effecting the slime coat
Second the ammonia poisoning. His skin is being burnt so he’s producing extra mucus in his slime coat to try and survive and because being burnt is painful.
He will progress to the other symptoms and get worse soon, this is your warning sign that there is toxic ammonia in the water he is living in. Fish die quite easily from ammonia poisoning as it’s incredibly bad for them.
Please read up about nitrogen cycling a tank and be ready to do a lot of testing and water changes over the next few weeks – always use a dechlorinator and an accurate liquid test kit such as the API Master is recommended (test strips are inaccurate and under read:
https://www.aquariumcoop.com/blogs/aquarium/nitrogen-cycle?srsltid=AfmBOoo0c5qm6BMn8cI3Yg3a5-qryssL2APY3eAeBuNg9254IjsTg4yP
https://aquacadabra.com/blogs/news/how-to-cycle-a-fish-tank-the-beginner-s-guide