Thing is i wonder how they have been living next to the filter, my filter sure does suck water in and push it out. They must be strong swimmers. I have had fairy shrimp before but im not sure if these are them, mabie LGP can help here. They have 6 LEGS two greenish eyes on the side of their heads, two spikes on the end of the tail (like fairy shrimp) and can swim perfect, but they also walk on there 6 legs in the jar when at the bottom. I never knew fairy shrimp walked ? There a translucent colour like most baby shrimp ive seen.
Thanks any idea i don't have a good camera at the mo and my video camera is not to good aswell but i can try get a video of them.