I just noticed 2-3 days ago that one of my tiger Oscar skin is coming off. Is this normal? I just had my 240 gallon tank up and running for about 2 weeks. I did cycle it and added 1 fish every other day from my 55 gallon. My filtration system is not so good right now. I have 2 110 Marineland bio wheels setup along with 2 300 watt heaters. I have had this Oscar for about 3 months now. It's about 4-5in. He seems to be eating great and all I feed him is nfs and Hikari pellets. My other tiger Oscar is good but I actually don't see them being aggressive towards each other and my other fish are not even aggressive towards them. My other fish are 6 tinfoil barbs and 2 geos. Is it because he is going and fish tend to lose there skin? I do my regular 30% water changes every 3 weeks. On a side note I did a water test. My kh and Gh were perfect. My no²=0 and my no³=20. Seems to be good. Any help will be appreciated. Thanks.
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