I have had a Kribenses for a few months now in a tank with a few other fish... I am pretty sure it is a female... well i had bought a blue johanni for the tank... the johanni seems to be a male... The kribenses puts on a show for the johanni every time he comes around... I was wondering if these two fish will mate together... and if so what should i do to protect the fry from the other fish in the tank