Hi everyone. just registered for this web site because I have recently acquired two severums. One is a large orange male, the other is a blue grey colour and I am told that it is female. I have also been told that it is unlikely that these two fish will mate, BUT they havie been behaving very strangley of late- chasing eachother around the tank, the grey/blue severum has changed colour, and now they have rearranged the shingle at one end of the tank into a well and appear to be guarding it! is it pssoble that these two have bonded?