Stocking 150 gal. Need Help.

[Psylant]

I wouldn't keep anything more aggressive than an Oscar, with an Oscar. Their mouths are too large and weak to defend themselves vs things like a RD. When they liplock they often break the Oscar's jaws. I would say Severums, JDs, Tinfoil barbs are probably your best bet for "large" fish to coexist in a 150. You could probably use parrots too if you like hybrids

 

[jabsthetank]

silver arowana and white blotched stingray, motor. stingray , clown loach , Red tail cat fish , king kong parrot fish , paroon shark , dinosaur bichir

Tank is too small for all of these except for maybe the CLs, Parrot Fish, and (dinosaur) Senegal Bichir.

peacock bass

No too small of a tank.