A danio fry! This is the 3rd time I've spotted one in the several years I've been keeping them. I always see the danios spawning, but I assume the eggs and fry normally get munched pretty quickly since they are in a community tank.
The last 2 fry I spotted over the years got eaten before I could retrieve them from the tank. This one was lucky...it was under the gravel line and not 1/2" from a hydra. I picked away the gravel with tweezers and sucked it up in a syringe. The little bugger put up a fight too!
Right now it is in a small cup floating in the puffer tank (the puffers seem amused). The fry appears to be free swimming. Unfortunately, I don't have a safe tank for it to be put in. I'll freshen the cup water a couple times a day for now and see how it goes. If it gets just a tad larger I could make a breeder net of sorts to float it in.