Originally Posted by MoneyMitch
it actually depends on the individual Oscar
as they all have their own personalitys (which makes them so great) you could definatly throw in a pleco and maybe another type of cichlid that isnt super aggressive. You could probobly have a better chance with getting diffrent cichlids with the Oscar
if you buy them around the same size. oscars are really affordable and are some pretty hardy fish.
While I do agree on the point that each fish is an individual and has its own personality, its best to make an estimate basted on the average temperament of the fish and the personal experience of others before purchasing as you will not know that particular fishes true personality for a good while after you get it. Its best to be safer then sorry, especially with the larger Cichlids like the Oscar
and Jack.....Its about a 50/50 chance with the Pleco IMO.
Its a possibility to place other large Cichlids with an Oscar
.....in aquariums of at least
100 gallons. But even then theres still a risk for trouble. Also, all Cichlids to my knowledge that aren't super aggressive stay rather small, a nice Oscar
Even if you buy fish around the same size, these fish will grow, and as they mature problems will arise.....especially with the Oscar
, for, like I said, they grow quickly and get very large.....full grown, a heathy one should be around 12", will devour anything they can fit in their mouth, and kill anything they see as a threat(which would mean any other fish, not all will tolerate a Pleco even).
Anyway, now that I see you don't want the Oscar
, good choice
However, I'd be wary about putting more then just the Jack and Pleco in only a 55....Jacks can be just as vicious as an Oscar
and in a 55 I'd image there would be territorial issues with tank mates.
What other Cichlids had you been looking at? If you forgo the Jack, there are quite a few other options if your looking for more then just one(or two, if you include the pleco)fish.