I had my betta fish for about a week and a half now and he is my first betta fish. He is in a 1.5 gallon tank with a filter. i have been doing partial water changes every second day and i did a 100% water change yesterday. up until yesterday he was doing great. then yesterday i noticed that he was swimming around as much and just laying down on his leaf or on the bottom. last night i noticed that his fins were stuck together like someone glued them at the tips. he does try and flair but the tips are just stuck. he is eating normally. please help i hate to see him like this.