I have a breeding tank of yellow labs...one male and 5 females. I had 2 females develop these dark splotches around their faces and sides. I know the male will sometimes get dark around his nose area when he gets excited or is ready to breed (from what I've read), but he's starting to get it on his side as well. I moved the 2 females to a 10 gallon to quarantine for the time being, but the other females are starting to get real docile and stay in the corner or hide very still. I've noticed also that the remaining females look as if they are putting their mouths near the gills of their tank mates and then the one on the receiving end start to shake rapidly (almost in breeding behavior). They are also starting to jerk their heads as well. Any advice would be greatly appreciated...
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