We raised red claw crayfish for years in 55 gallon tubs and loved the way they multiplied and grew with little more than heat and plant filtered water. We had summer greenhouses set up with floating insulation and plants poking through and for a while we even eliminated the filtration . . . until we found the crayfish crawling up the plant roots and escaping into the hen house. Boy did the hens make a ruckus about that.

We will be trying our hand at raising tilapia and crayfish again but we have so many things going on - best we get our other things under control first.