Will The Fishies In My Tank Get Along?

[inkybobob]

I set up my tank got everything but want to make sure my fishies will like each other. I added an arrowana because it looked too cute to pass up. Also an Oscar because i like their personality. A fire eel because the guy was just awesome. And a pleco not sure what kind exactly but has little white spots all over it if it helps.

Oh and I'm new here so nice to meet you all!

 

[Blondielovesfish]

What size is the tank?

 

[inkybobob]

220 gallon though i met you in the chat so this is more in case anyone else has any advice!