I used to keep them

one of our native fish,, Tandanus tandandus(lot of fish are named like this) is the full name or just eel-tailed catfish
Problem is they get really big over time..70-90cm(aprox 36inches max) and the spines hurt if they get you.. Ive never had any long enough to grow full size though. Bit like salmon tails,,gotta give them away or release them after a too big of a size.
They are also great gaming fish and taste very nice