I don't know anything about aquaponics but have in the distant past kept GSF in aquariums when our kids were small. Would catch GSF, snails, crawdads and whatever else the kids could come up with in a small seasonal creek and dump them in a ten gallon aquarium.
GSF are tough fish. They will take a lot of abuse. Them along with BH's are the two fish that survive about anything in local ponds and streams and will be there when all other species of fish will have died.
Good luck with your project.
