4 line for sure, 100%
Pim Blochii (not pictus)
they can max out at 12", that would be a large one, but definitely not unheard of.
I have one... they are EXTREAMLY slow growers, had mine for about a year... and seen maybe and inch of growth (he's 5-6" now... and I got him that size haha) Mine loves earthworms and enjoys blood worms, will also eat pellets.
(oh and just for the record... sorry bottomfeeder hun, but Pim=pimelodus, not pictus... though pictus are Pims not the other way around)