I needed an adapter that seems to not exist in single part form. A little bit of thread tape on the maleNPT end helps but wasn't necessary. No barbs on the hose half didn't cause any issues.
Modeled with a flat bottom so you don't need to deal with supports or bad overhangs. If you print it with the flat side down, as intended, the threads still come out nice and there's no need for supports. I used PETG with no cooling, 5 arachne-perimeters, and .2mm layer height; 7hr print.
Why pay $500 for a pond skimmer when you can just leave the pump near the surface of the water?

The author hasn't provided the model origin yet.