Hi, I got my betta fish a month ago from a normal pet store and I noticed that his fins werent the usual size and density. Some parts of his fins are transparent with frayed ends and are smaller than usual plus he came with an almond leave which i didnt think much of at first. Now i'm super worried... since then i noticed a total of 7 pin holes in his fins of which only 2 remain and the rest have been covered up. I was relieved when those holes were covered but i noticed his fins were shrinking as some parts were missing the next morning.. betta: halfmoon Tank size: 7 gallons Filter: yes heater: no (live in tropical country) Aquatic plant: 1 java fern (with driftwood attached) fish house: 1 barrel gravel: stones meal times: one or two granules throughout the day and sometimes a few freeze dried blood worms. no feeding at night I do 50% water change every 4 days and 100% water change along with tank cleaning on the next 4th day and the cycle repeats. I have added aquarium salt and betta essence (consisting of black water extract etc). I have bought a super external bacteria & fungus away and am considering to use it the next water change but I am afraid it may not be fin rot? Dont wanna dose my fish with unnecessary medications :/ I am wondering if it could be the sharpedges around his home the barrel or the driftwood that the java fern is attached to? please help.. Despite all these, he has been a really super active fish from start and always darting around especially when he sees me he'll come to the top of the tank looking for food and has been building bubble nest several times as well... i am really worried and puzzled and i dont know what to do.. please advise!!