Some species in Pseudobagarius? Hard to tell on my phone but i think i almost bought one of these under the correct name. Think this fish is from russia or somewhere around there very hard to research it on my phone. Do a search for pseudobagarius
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South American native name Zungaro is applied to many large Pimelodids. I met Pseudopimelodus bufonis (another bumblebee cat) being called "zungaro bumblebee catfish" on exporter's lists. This is not what I'd consider a large catfish.
So, not too much surprise a SA BB could come under that name. IMO unusual but not impossible. Also implies it is from SA, not Asia, largely eliminating my second suggestion (barring an indirect transport, mis-ID, etc.).