My baby betta, whom I have had for a while, is acting super strange. I had just finished doing a water change on his 2.5 g tank when I noticed that he was just sort of hovering on the ground, his body slightly curved. After he did this for a few minutes, I decided to scoop him out with a cup. After several minutes, I managed to scoop him out, and I added stress coat to his cup. Yet, for some reason, all of his fins are spread out, kind of like he is flaring, but he actually isn't. He ate a pellet that was dropped to the ground, but now he is just sort of floating stiffly in one place, barely moving. He (btw, still haven't figured out his gender yet, just calling him "he" for now) has vertical stripes, and his color has darkened up. Usually, he is light brown, with baby-camouflage stripes and his fins transparent red. Now, his is a super dark brown, and his fins are a bright red. I have seen his coloring like this before, but never for more that a few moments. He doesn't react to me at all, except sometimes he freaks out when I try to get close to check on him. His fins are still spread out as wide as it can go. Imagine a fish flaring. Basically, that is what he has looked like for the past 30-45 mins. It almost seems like he is paralyzed in that position, but to be honest I doubt that is the case. He has never been like this before, and I'm ally worried. Help?!?!?!