[@Antarctic Termite] Less than 10 individuals is far too small a population size to to be viable; They wouldn't survive enough generations to develop much of anything due to genetic problems from inbreeding. I won't pretend to know the average size of a school of fish and I know they vary widely, but I'm fairly sure that a single one being the extent to a species population would be a dangerously small population as it stands. Edit: [@Cyclone] No worries mate, it isn't a bother at all to change.