
I've been trying for three months to get my swordtails to have fry, but it never worked.

The last female that was pregnant gave birth in the community tank the day before I wanted to move her to my breeding tank!!! That was so frustrating. Anyway, two days ago I put my pregnant gold bar swordtail into the breeding tank and yesterday when I got home from school, she had obviously given birth. When I couldn't see any fry, I was sure I'd failed yet again, but suddenly I notice one lone fry stuck between a floating leaf and the wall of the aquarium, so I quickly moved the mother out. Then half an hour later there were two fry, then three, and now I've counted seven, possibly eight!!!

The daddy is a koi sword, so I'm hoping some of them might look like him, although right now they all seem to be looking like the mother (not that you can really tell right now...) Anyway, I have some questions:
1: when I put the "micro flakes" in there, how do I know they're eating them? The tank is ten gallons, so it's impossible to see all the fry. Sure they swim about and seem to be looking for food, but I've never actually seen them consume any! It worries me a little. As for liquifry, it doesn't seem to exist in Germany.
2: about how old will they be when they can start eating newly hatched brime shrimp? and how long does it take for them to hatch so I know when to buy them.
3: will those tiny tiny tiny TINY little fish really keep my ten gallon cycled? I've put a pair of otos in there...is that necessary though?
thanks for reading and answering any questions!