very normal behaviour sorry but u wont be getting any eggs from them just doing that im afraid ..mine tend to have a swim in their shoal often then what looks like a lot of piggy back riding ...
when mine mate the male follows around the female ..he tries to get in front of her all the while and sit sideways on lso they look like the T shape..he does a little flutter thing trying to get her attention ..she will usually play hard to get for a while darting in and out the plants ..
then he tries again ..as he sits sideways next to her it looks like shes sinking fangs into his side of belly ...(what is actually happening is ..she is drawing sperm from him to fertilise her eggs)he lies there while she gets it from him ..looks like hes being vamped ..shakes him a bit ..
not long after this happens ..literally seconds regarding my female fish can be seen carrying eggs in her bottom fins..you can see them drop here if you watch closely ..then she swims to either side of glass tank or plants and deposits them here ..
then the fun begins all over again ..male chases ..she plays hard to get ..then relents ..they do the T-shape while she gets his sperm ..then shes off to deposit them ..this happens over n over again till alls done ..ive had 1 female going for most of the day n later next day also ..
will try find pics of mine in t-shape
kaz x