The Queensland Blue Lobster, or Redclaw (as Aussie farmers call it), Cherax quadricarinatus, is definitely the crayfish species to raise in any type of small or large commercial aquaponics systems, with proper system design, they will cause you none of the problems common to Procambarus clarkii and other 'rowdy' herbivorous crustaceans. You can find the best expert advice and select stocking juveniles in the world by going to EdenSustainableTechnologies dot com or contacting me, directly, for any help you might need with any Cherax species problems and solutions. We only work with serious commercial producers, so for small quantities of Redclaw juveniles, go to Christine Smithers, at Stick Fins Farm (farmingcrawfish dot com). Farming Redclaw for fun, food or profit is all about proper system design for successful culture resulting in the size and type of the many Redclaw products that you may seek to produce. This animal is extremely adaptable, cheap to feed, exceptionally docile and hardy for a crustacean, and very benign toward all other life forms, but adapting our systems to what makes it most comfortable also makes it its most productive. Never work against Mother Nature, when, she is always so willing and able to go right to work FOR you!