Today I was cleaning out my 10 gallon, beginning the process of transforming it into a fiddler crab only tank. Last week I took the zebra danios and tiger barbs that had resided in the tank back to the pet store and lowered the water level in the tank to about 1/4 of normal. As I was taking out the decorations and driftwood, my girlfriend and I noticed hundreds of tiny....fish? They swim like fish, they look like fish, but they are very, very, very small. Even the smallest net they can swim through. They look like they have eyes, but I can't tell completely. Here's some pics but I'm afraid they won't do much good, they are so hard to see... What should I do? More likely to be barbs or danios?