thanks african, looks like there 2 males for def outta the yellows then, and sorta thort they may be males as they are always going round and round in circles with eachother so that may explain it.
as for cobalt hmm well 2 of them have prominant egg dummys and the others only have what sorta looks like them, eg not prominant, so maybe 2 males, 2 females, well heres hoping anyway, dam not being able to sex them til they grown a bit, i want 1 m to at least 3 f outta the yellows and cobalts, may have to buy more cobalts