How big will a sun catfish get?? And what other fish is it compatibile with??

Answer 1

I head a number of fish being referred to a as a sun catfish.
Usually however, sunfish referes to a family in the Perch order or marine fish.

Can you get the scientific name? Or post a pic?

It could be a colour morph of a rapheal, a gold nugget, a lemon, a dwarf Otocinclus or a type of cory. All very different.

Unfortunately, common names are not often correctly used in the hobby. Especially with catfish and cichlids.

Sorry

Answer 2

here is a good site www.aqualandpetsplus.com/Catfish,%20Sun.htm.