top tow female for sure. the bottom one idk yet but could be male. females get the dark bellies, thicker darker bands. males can confuse you a little when in breeding pattern. but usually males are all spotted up with less if any bands.
I agree, top two are female, I believe that the bottom one is too small to tell, top half has bars like female and lower half has the dots like a male. They are beauties when they grow, the white portion glows when breeding!