BTA reproduce two ways. By a fairly similar one egg meets sperm it wonders off makes another, second is by ripping itself in half.
There are "males" and females... and they reproduced by releasing sperm or eggs...basically into the open water and its a hope for the best. Which in the wild kinda works large pops of them in one area one starts off and they all go freeing the O's all at once. Ta da Lots of babies.... Been some cases of this happening in a tank.....the attempt at least but not the success. BUT what triggers this reproduction in the wild or in the tank is still a serious ?? (be some money in that, one could captive Breed them in mass quantities I think)
Second is they rip themselves in half. And they seem to do this for two reason first is Bad... Kinda like Your in a horror movie and there is the murder is after you...if you split and there are two of you....you just doubled your odds of surviving! Yaaa?.
VS thanksgiving... stuff is so good, you can possibly eat all this, drink all this...so let me share with another Me!
Least that is my likely to imaginative take on it...