Getting a 5 inch pseudopimelodus bufonius I need some tips
1. Recommend tank size
***I think the 30 gal section should work until your move just fine.
2.what kind of food do they eat
***They are predators that prefer flesh but would take pellet with some training.
3.are they compatible with oscars
***As stated above, if neither can eat either, they are.
4.how active are they at feeding time
***Varies depending on many factors. I think if comfortable, they will come out in the light to feed but they hunt by night by nature.
5. Is a 7.6 ph fine for them
***Should be. It is usually not so much the value but the stability that matters most.