Your image is such that I can't really see anything. Regardless, if your amano were berried, its almost certainly amano larva. They won't live very long without brackish water. In the wild they are born in fresh but find their way downstream to brackish water for their larva stage.
Anyway once they die they still will produce less ammonia then your new aquasoil (regardless if its capped or not) So remember to keep doing water changes. A new aquasoil tank needs 50% water change every day for the first week, every other for the second, 3 times in week 3 and twice in week 4.
P.S. I will take my money in LFS gift cards. It's just going to go to them anyway.