Groundfish Posted August 30, 2022 Report Share Posted August 30, 2022 Hi, I am new to the hobby and have my 2 koi betta. I only bought my second one a couple of days ago and I thought the coloration on his mouth was his pattern. When I checked in again today, it looks like its spreading and he is not esting as much. I think it might be cotton mouth? Can someone please advise. I've attached pictures here. 20220830_115353.mp4 Quote Link to comment Share on other sites More sharing options...
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