oscar vs parrot

Question
Hi Jamie
I have been keeping chiclids for about 4 years now but im a little new to keeping oscars.I have a 150 ltr tank with 2x6inch oscars in there,will it be ok to put 2 parrot fish in there or will the oscars kill them in that case what kind of chiclid wil be ok with the oscars.
Cheers Siebert.South Africa

Answer
Siebert,
I'm sorry to be the bearer of bad news, but 150 liters is not enough room to have even one oscar.  Oscars need to be kept in tanks that are at least 55 gallons, and even then they may grow out of it.  Oscars will kill other oscars, and the only fish I know of that is compatable with oscars are plecos.  I'm sorry to be the bearer of bad news.