Hello! Yesterday my betta fry turned 11 weeks old and I’ve had them in separate containers. Since I moved them to the containers a few have shown the horizontal stress stripes and a few have lost the stress stripes and have settled into their new spaces. Today I moved the paper blocking their sight of each other to see reactions after being separated. Some lost the stress stripes immediately and darkened in color. A few others actually gained vertical lines which I’ve read is breeding bars or stripes that only females will show. So my question is, is it too early for these fry to be showing breeding bars since they haven’t reached the 4 month mark yet? Is it safe to assume these are females or is it too soon to be absolutely sure?