fuh..
dun cal mee sifu
i just share what i learn n from experienced..
using rotifer n moina can increase survivor of ur betta..u can see lot of varieties from the fish fries...1 month colour oredi occur...but water quality is important factor..if not.lots of survivor..lots of death..i suggest u separate the fries..make 2 or 3 tank..oso can increase the survivor..make sure declorinated 1st..just want to make everybody hepi spawning betta