I wouldn't recommend a pictus with anything it could get in its mouth! From my reading these catfish are predators that would probably snack on the neons after lights out if they were peckish.
If you want neons, why not go for a more peaceful south american catfish. This means they will probably have similar water requirements and decor. A group of Corydoras or a small bristlenose might suit you, or some striped or spotted talking catfish if you want something with more distinctive markings.
Alternatively, if you want a Pictus (and they are pretty stunning catfish), perhaps look at meat eating cichlids that don't get too big, but wouldn't be seen as lunch. This would also allow the feeding of a predominantly carnivorous/piscivorous diet, ideal for both cichlid and catfish.