Any idea how my micro rasboras or dwarf rasboras got caught under the media basket in my new aquaclear 30? I even have a sponge over the intake. They used to swim up the output occasionally in my old top fin filter, but they haven't done it in a while. I know they like swimming in the current, but I just can't figure out how they'd get underneath everything. 3 of them were there. They appear stunned since I got them out, just kind of staying still in the middle of the tank. No obvious damage except for a tiny bit of messed up caudal fin on one of them.