Hey, guys! This is Maru. I haven't had him very long, only a couple of weeks. He's in a hexagonal tank about a gallon and a half-ish big, and the water isn't really dirty. I was going to give him a good water change tomorrow anyway to keep it clean. Over a span of only a couple of hours, he's lost basically all of the scales on the top of his head, and many along his back. He doesn't seem to be unhealthy though. He hangs around the surface a lot, but I guessed that was because he doesn't have a heater but a heat bulb instead. He doesn't stay there all the time, he swims around with his find out and even flares his gill flaps if you put your finger to the tank. Sooo, my question is, what's up here? This is only the second Betta that I've raised, so I could use lots of advice. Thanks!