i'd just build a massive planted mixed pygo (cariba, piraya, wild red bellies, ternetzi) piranha tank with tons of schools of small tetras. my inspiration below..not mine
1,000 Gallon tank with variants of oscars, blue acaras, green terrors, red devil, midas, jaguar catfish, just a really big amazon type tank..or i would do 1,000 Gallon native tank with bullheads, sunfish, etc..anything that would work..(amazon, native)..