I've kept my alberti with young Hemmigramus rodwayi, and Meglamphodus sweglisi. These fish being no more than 2.5cm in length. Never seen the alberti even think about munching them. I've had this fish for about 5yrs. And even thought I don't know what happens at lights out, I think you should be safe.
It used to be said, as a bit of advice for fishkeepers (when they didn't know about cats), that the longer the barbels a catfish had, the more predatory it was likely to be.Think corys=short and pim pictus=long.
Alberti are NOT like this & seldom eat tiny tankmates. It does happen but in my experience its only when the alberti are big and with livebearer fry etc. Alberti dont actively hunt fry down but eat ant small piece of food o the bottom of the tank after lights out, which might be slumbering fry.
Well fed individuals with the species you indicate should be ok. There is never a guarantee but its most likely you'll have no problems.
Mr. Rate: That's how a conspiracy works. Them boys on the Grassy Knoll they were dead within three hours, buried in the damned desert, unmarked graves out past Terlingua.