I have my silver in a 500g community tank with a clown knife, tinfoils, flag tail, leporinus, oscars etc, no problems at all.
My father in law recommended Oscars aswell but when the arowana's is around 9 inches.I have my silver in a 500g community tank with a clown knife, tinfoils, flag tail, leporinus, oscars etc, no problems at all.
Ya great recommendation with the silver dollarsIf you want him to be with tankmates, I suggest you introduce him to other fish (big and quick growing enough not to become a meal) soon. Fish like silver dollars are good dithers to help him not turn into a killer and learn to tolerate others. They all have their own personalities and while one may be calm another may be insane. Silver aro's are one of the most docile aro's but it is not unheard of them to not tolerate tankmates or snap and kill tankmates. I would introduce tankmates soon and be quick to get him off of any live foods if you are feeding live (live foods increase aggression and can harbor diseases and parasites) and onto pellets and/or frozen. Just like with any fish be religious with water changes and maintenance and he will be an awesome wet pet. Your silver aro looks very nice btw. Grats and welcome to MFK!
I don't recommend oscars although they aren't super tough they can be mean and I'd wait till the arowana is around a foot before introducing tough cichlidsMy father in law recommended Oscars aswell but when the arowana's is around 9 inches.
That's awesome group of fishI got my aro at around 8", the knife was around 6", all the other fish I bought as juvies, 2" or larger, they grew up in the tank together. My silver is now24/25", the knife 22", the oscars 8/9", tinfoils 10". I've had no issues at all (touch wood)