I have 3x motoro and 1x sp peru in a 180 gallon tank, i know thats to small, but they are about 10" and 180 is just a growout as im going to build bigger as soon as we buy our new home. I had a 12" motoro female in there, but this badboy did bite her pretty much, so i had to take her out, and into a second 180 gallon, and i took the sp peru from that 180g and down were the female used to be. Now he is bottering the sp peru, and also the others a littlebit.. Its just around the edges of the disc, and it doesnt look nasty, but it looks irritating, the sp peru has small wounds and are pretty greyish around the whole disc(no blod). Should i worry and do something like a divider? I did that for a period, and took it out a little while ago.. Is there any way that he could stop doing this by itselfe, or is he just so sexualy frustrated(matured) that he let it go out on everyone else? I thought that he would notice if the females were mature or not.. The sp peru is a female.
hehe..stupid fish 
I may take her up, and a male down..Thats the nice part of having 2 system, for me it doesnt look critical as it is on the edge of the disk, and there is no red(blod) spots on the wounds.. But it can develope very fast..He has already beated another female really hard.. But i dont wanna sell him, cus he is ready, and very beautifull..I love his spots!