Hello, all! So, I purchased a male halfmoon betta (who I have affectionately named “Yoshi”) from PetSmart about two weeks ago (March 23rd). The first week, his fins were perfectly fine and absolutely gorgeous. But, then I noticed he had two perfectly “cut” tears in his fins, and a few hours later, I checked on him again only to find his fins had been completely shredded! I immediately suspected the plastic decorations to be the culprit and removed all but one (it has a very smooth finish). This seemed to work and his fins started healing up right away, which made me very happy. My happiness was short-lived, however, because after adding live plants to his tank (narrow java fern and a Marimo moss ball), I noticed his fins had torn again, only this time, it was more jagged and sporadic. For the past week or so, I’ve been mulling over his fins. He’s had some regrowth in some areas, but then rips in others. I can’t tell if it’s fin rot, if he’s biting his tail, or if he’s just somehow getting injured. :/ Wven his top (dorsal) fin lost a good chunk, but it’s been regrowing, thankfully. He’s very active and has the appetite of a shark. Yoshi loves following my finger, and he is such a curious little bugger, too! So, I’m that regard, he seems healthy to me, but maybe I’m wrong. He does not appear to have any black/white/red spots or marks anywhere, either. Earlier today, I noticed he got wedged between the heater and one of the fern leaves and as he pushed himself to get out, I could swear his fins got a little torn. I’m not sure if it’s the heater causing the problem (he enjoys chilling out by there in the night), but I pushed it down further so that there would be more space between it and the leaves, just in case. Tank info: 3.5 gal (I’m hoping to upgrade sometime in the future, difficult right now as my roommate takes up a lot of our space) Two live plants (java fern and Marimo moss ball - if this is of any importance, my java fern is growing quite well and producing a lot of babies, which I would hope is a good sign that the water is decent) Heater heats to about 78 degrees Fahrenheit and is not manually-controlled Has a filter (currently not in use because I was worried the intake was tearing his fins; I ordered a sponge insert in the hopes it’ll help, and it’s arriving this Thursday, so until I get it, I’m doing approx. 25% water changes and cleaning up any feces/food with a gravel vacuum every other day to make up for the filter being off) I am currently unsure of my water parameters (I’ve been trying to order a test kit, but I did have my water tested at the store some time ago and the ammonia was the only factor that was slightly above the accepted amount, but I was due for a water change anyway) Pics w/ dates: March 23: (when I brought him home) March 30: Fins became completely shredded April 2: He had a good amount of regrowth (you can see how truly beautiful his colors are here) April 7: His fins started showing signs of tears again April 8: From one day to the next, his fins got noticeably worse. You can make out a bit how his dorsal fin appears to be “cut off” in away Please help me! I’m trying to do my best, but I feel like a total failure right now. P.S.: Sorry for all the text, I’m just really worried about him. My apologies if the pics aren’t perfect quality, he moves really fast and can be hard to take pics of! Thanks for any help!