You should reflect two things:
– Paros do nearly never occur in ponds but in streaming water only
– There are many descriptions of the fish communities at Paro-sites, but I never read of any catfish.
There maybe a third point:
– Where do you get possible species?
Think of the fact, that Paros in nature live to a major extent of the juvenile forms of the shrimps occuring in their habitats. But these species are missing in our pet shops. Why? Because normal aquarists would not buy them because of the water conditions. The same with possible catfish species.
Why are you so fixed to catfish? You cannot breed Paros in Community tanks. The adult go very good with Boraras, but not the very young. In the first weeks they hide mainly in the layer of leaves on the ground. Catfish preferring that would be counterproductive. Free swimming catfish are, to my knowledge, bound to other water conditions.