I have a 2-2.5 gallon tank with just a betta in it. Its been needing a cleaning for quite some time. There has been much algae in it (mostly on the sides) and I would just scrape it off when I did water changes. Today I've noticed little tiny white spots if you will (no bigger than an eye of a needle), along some of the sides. These tiny things look like tiny bubbles at first glance, but up close I notice them crawling (I think, waaay too small to tell what they are). The only thing I can think of is baby snails? I have had a snail in the tank (to help keep it clean) a while ago, but its been at least 6 months. These little dot creatures seem to crawl (seem too fast for a snail slither), seem to have 2 small 'feelers' (another reason why I think snails), and are helpless when they lose grip of a surface. I removed the betta, just in case, but not sure what to do about the tank. These dot creature things seem to be hanging near the algae (no real proof of it though) and the small heater. I didn't notice any on the betta or in the gravel or anything. Please help!! Are these snails or some other...things? Any suggestions would be helpful!!! thanks!