Nacho has been lethargic for two days now. I did a partial water change, as recommended on one of the many "Care for Betta" sites and it didn't perk him up any. I don't see any fin damage or fuzz, so I don't want to medicate his water. Help me! He's just floating (but alive) near the top. Occasionally, he'll swim to the bottom and then up to the top of the other side of the tank. What could it be? He hasn't eaten in two days. He's just not my sweet Nacho of two weeks ago. I'm doing a full-on water change this weekend.
If anyone out there has any sage Betta advice, I'd love to hear it. Poor Nacho.
 I did some more research and one site suggested shining a flashlight in the tank to more closely inspect his fins and sure enough, they don't look as pretty. She, the Betta expert, also lives in LA and said our PH tends to run high and that's most likely the problem. I'm hurting him!! So, I am heading to Petco after work for a PH tester and a tank thermometer and everything else I can possibly get to bring my darling Nacho back to health. Oh, and did you know fish can get depressed? I'm thinking of getting a figurine of Freud to place in the tank just in case.