Would this combination of fish work?

[Nabbig2]

Could a 120 hold a tiger oscar, a clown knife, a common pleco, and a datnoid?

 

[sabotage]

why not, it should work fine...

 

[Renteria]

id think a clown nd dat wuld be too big fur a 125

 

[Nabbig2]

id think a clown nd dat wuld be too big fur a 125

Hmmm, that was my main concern. What is the minimum size that they could all live in? (I'd get bigger tanks, if I could...)

 

[cichla1004]

I would say bare minimum 185 with good filtration. I don't have experience with dats though.