are you in germany? i got them when i lived in US. they were dirt cheap there. i think they are called trinectes maculatus.Very nice. At what salinity did you keep the hogchokers? And where did you get them?
i've kept them at around 1.010-1.015. they grew to the size of my palm almost and even started eating sinking pellets.
if you are in germany, you should be able to special order anything. that's where i got my current flounders (not sure on the actual dealer)