I have a 10 gallon fish tank that I just added 2 crawdads in. I also have a 20 gallon tank with some convicts. I was curious if I could put the 2 crawdads in the 20 gallon tank with the convicts? Will the convicts eat them? If that is not an option...I have ~6 guppies that I plan on putting in the 10 gallon tank. Will the crawdads eat the guppies? Is there a win win situation here? Thanks.