Need a little bit more information? Tank mates? What decorations and such do you have in your tank? I don’t see any indications of fin rot personally, it looks more like nips or tears. Theres a chance this could be beginning but its hard to know with a lack of info
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Looks like beginning of fin rot to me. I had the same issue with my old betta. It was caused by not enough water changes even though parameters were pristine. Too much bacteria in the water can cause it, as these fishes have weak immune systems. My betta was pretty old when he started getting the tears in his fins. The water parameters must be clean and the water must be fresh and not old.
You don’t seem to have anything sharp in the tank so that’s the only way I can explain it as it’s exactly how it happened to mine. It’s usually not lethal to the fish and they don’t seem to bother unless it gets really bad, but if it’s just tears they don’t seem to mind. From my experience these tears will never heal fully and the fish will always look a bit ragged. Antibiotics at half dose + water changes stop new tears from forming. My betta lived with ragged fins for another full year then he got really old and possibly blind, and died of old age after 2+ years (not sure how old he was at the store when I got it but I assume at least 6 months to one additional year as he was big).
My guppies sometimes get it too if I neglect water changes. Not sure if it could be something else, these days I blame old water, because my parameters are good.
If you don’t do anything there will be white edges along the tears and that’s when the fish is fully infected and it may turn deadly. It happened to my guppies when my filter failed completely and I didn’t notice until a few days later, it began with all my males getting these tears and then it became full blown finrot with infected white edges and everything, then they got epistylis and 20% of the colony got it and died. All of this for less than 3 days without filter, and mine broke right after a water change too.
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Need a little bit more information? Tank mates? What decorations and such do you have in your tank? I don’t see any indications of fin rot personally, it looks more like nips or tears. Theres a chance this could be beginning but its hard to know with a lack of info
Looks like beginning of fin rot to me. I had the same issue with my old betta. It was caused by not enough water changes even though parameters were pristine. Too much bacteria in the water can cause it, as these fishes have weak immune systems. My betta was pretty old when he started getting the tears in his fins. The water parameters must be clean and the water must be fresh and not old.
You don’t seem to have anything sharp in the tank so that’s the only way I can explain it as it’s exactly how it happened to mine. It’s usually not lethal to the fish and they don’t seem to bother unless it gets really bad, but if it’s just tears they don’t seem to mind. From my experience these tears will never heal fully and the fish will always look a bit ragged. Antibiotics at half dose + water changes stop new tears from forming. My betta lived with ragged fins for another full year then he got really old and possibly blind, and died of old age after 2+ years (not sure how old he was at the store when I got it but I assume at least 6 months to one additional year as he was big).
My guppies sometimes get it too if I neglect water changes. Not sure if it could be something else, these days I blame old water, because my parameters are good.
If you don’t do anything there will be white edges along the tears and that’s when the fish is fully infected and it may turn deadly. It happened to my guppies when my filter failed completely and I didn’t notice until a few days later, it began with all my males getting these tears and then it became full blown finrot with infected white edges and everything, then they got epistylis and 20% of the colony got it and died. All of this for less than 3 days without filter, and mine broke right after a water change too.