i recently got two sterba corydoras and they have been in my tank for little under 48 hours, im pretty sure i have one male and one female and they are chasing each others pretty quick across middle and bottom of tanks and one (i believe to be male) is literally resting with part of 'his' body on top of the female, they wont leave one another for a second and looks like when livebearers mate side by side sort of behaviour. is this breeding behaviour?