I just spotted these today.... it is very hard to get a good picture. I am thinking black bar endler but about 5 turned up all at once, is that normal? Other options would be flathead minnow and gambusia. I will try and get a better shot....
I'm with Tastey. I can't tell the difference between fry for many weeks - or well, in many instances. There are exceptions to that - some fish are obvious, but most not so much.... I'm fry ID challenged.