I've read about they have been known to start at a early age but this is a first for me, I have some Hongsloi fry five mo. old in a grow out tank with a adult female [temporary] that has gone a holed up in a coconut and filled the entrance with sand and the male she chose is about five times smaller than she is, he has colored up nice [lot of red on his belly] he stands guard over the hut chasing all other fry away. It's time to set up another tank [can hear the wife now], I'm thinking she will probably kill the other fry.