At the lfs I saw a tank with shrimp labeled "algae eating shrimp", in this tank there is a betta and a ton of these shrimp and at least 2 other kinds of small fish. I decided to pick up 2 of them (1 for each tank) at just under 5 dollars each and give them a shot. I wanted 1 for the 10 gallon and figured I'd see how my betta likes 1 for his 5 gallon, if he starts looking at him funny I'll have 2 for my 10 gallon. I was told they were "usually amano shrimp" but was wondering if anyone might be able to identify better then the associates I spoke to. They were all around the size of the betta in the tank with them, maybe the last 2 sections of my pinky, if not slightly bigger/fatter. I tried to get 2 of the smaller ones.