Not unless he wants to go high end brackish almost marine...
Aso not to mention a GSP as adults get to a decent size so 3 in that size tank wont work in the long run...
Kribs are pretty passive fish.Kribs are a good idea. Would they or a jewel kill cories? I want to avoid any spendy or exotic/ delicate species since it will be in my classroom
Do any of you think a single jewel cichlid would color up?
I would go a Jewel and 2 F Convicts/HRPs, Acaras and small Geos, angels and rams, Kribensis w/ Rams and Dwarfs will work, but no aggressive cichlids w/ Kribs, Gymnogeophagus balzanii, dwarf pikes, or go the other direction with Etroplus, or Neolamprologus , Julidochromis or Shell-Dwellers. Catfish suited for that size tank will be fine w/ any of those mentioned....wouldn't worry much about the other levels, just focus on getting your tank bosses to be compatibleKribs are pretty passive fish.
Jewels are way more aggressive. I wouldn't expect much color from a jewel if it's the only jewel in the tank.