[lwstinkinsweet]

i know answering this question would be easier with pics, but i cant do that so here goes nothing.

i had a betta from walmart. i diagnosed it with ich and fin/tail rot. took him back after much deliberation with my boyfriend. got money back. got new fish. have had him for one week and two days now. doing great. wont eat anything but freeze dried bloodworms. but eats those pretty well. friday, skim water since full change had been done on wednesday. get all left over food out (at least all i can) since i was leaving on saturday for an overnight trip. came home today and fed him. ate a few flakes. flared at his reflection when light first turned on. And here we come to my predicament. while he was flaring he really opened up all of his fins as they do. i notice a patch of little holes in his dorsal fin and one hole in his bottom fin. never saw this before. i have done one complete water change/tank cleaning and a daily skimming of leftover food (pellets he refuses to eat). i know his water is clean. i use a teaspoon of salt for my two and a half gal tank. i also put in a water conditioner that is supposed to make all water safe for betta. when i skimmed on friday i moved his little plant (it has plastic stems and silk leaves) he likes to hang out near his heater and filter so i put it closer to there to see if he would use it more. seeing as he didnt ever go into it. also noticed before i left he had started to see his reflection in his tank walls and chase through the plant up and down along the glass. i am wondering could these holes be from his plant there is one or two leaves coming off the plastic part. i didnt see them before so i dont think he came with tail rot. i looked very carefully since my last fish was so sick. what should i do for him? i know his water isnt the problem and i dont think he came with it as i check him every day in fear of having another sick fish. how would i be able to tell if it is an injury or fin rot? should i treat him for fin rot just in case? i removed the plant but is there any way to treat an injured tail?