I did see them spawn

I was about to close down my coldwater tank, the other fish had all gone leaving the male & female weather loach.
babies are now about 4 weeks old. Unfortunately after reading that spawning & raising weather loach was near impossible (and a family bereavement) I abandoned the tank, just leaving the filter running, but did no water changes.
I have counted 5, but there are in a 5ft tank with large gravel, there could be more!