i think my sens are porking

[sbuse]

maybe it's a teritorial issue...i have witnessed my breeding pair fought brutally when transferred them in a new tank.the female bit one of the male's pectoral fin for 2 hours.she did not let go.they even do the flaring movement just like cihlids do.

it is just that they are in a 180gal...just 3 sens, 1 ornate and an endli...the ornate has claimed a rock in the back, but doesn't fight for it...he endli and sens just go everywere...the sens have been together since they were 2" long...when i had them in a 20gal temporary they did this, they started this in the 180gal after a wc...then they stopped...then started again after the next wc...