Oscar tank help

[nghsquad05]

I'm moving my 2 oscars and pleco into a 200 gallon tank. I was thinking about adding a shark into the tank. I have heard some people putting red tail shark into their tanks. Any advice on what type of shark I could put in with my Oscar? I want to add a shark in before my Oscar starts getting too big.

 

[coaldrake]

Red tail or silver.shark something size compatable and bottom dwelling i reacon most would be ok

 

[ktomminello]

Upside down giant black catfish or iridescent shark just 2 of my favorites- though the giant black cat has a history of success with oscars.

 

[cmbtengnr43]

I have a rainbow shark ( red finned) in with my convicts and jack Dempsey and they leave him alone hell sometimes he chases them lol I think adding one would be fine as long as you get one with a little size and your Oscars aren't too big yet and you don't feed them live feeders cuz that makes them think any fish you drop in is food