I added male NBG (Northern Bluegill) to stock tank. He is about 1/2" longer than the larger HpBG (Hand-paint Bluegill) females. Dominant female went from brat to submissive with just a few seconds. Other displays occurred but may not be of interest here. When male leaves her immediate vicinity (~18") she goes brat again.
Aquaculture Cooperative Research / Extension Lincoln University of Missouri
