Almost 4 weeks and I've noticed something. The fry's territorial instincts are kicking in. Some of the bigger ones (and a few smaller ones) are guarding their portion of sunken food. They'll nip any one who tries to come into their small circle of food. Once they're pleased with themselves (yes these fishes have egos bigger than mine), they'll go back eating their food.
Should I start jarring those that are protecting their territory? I feel their still too young. Will keep a close eye this coming week. If the nipping gets bad, I might have to start jarring them. They are plakats after all, not the less aggressive show betta (most sites I've read about breeding are show betta related, jarring starts at week 7-8).