They all seem to be kind and hanging out towards the bottom is that normal? Also the Aquatic store told me to get a sponge filter so the risk of them getting sucked up into the filter was low
Place the sponge filter in the main aquarium. Let it stay in there because it needs to be seeded. Seeded means beneficial bacteria grows on it which takes about 4-6 weeks. If you put the sponge filter in the aquarium with the fry without being cycled (seeded) that will be dangerous . Do small water changes every other day of the fry aquarium. Also don't overfeed.