Well first of you will need a bigger tank then 500L an silver arowana grows to at least 100cm and are an active swimmer that never stays still. You will need at least an tank with 200x100cm footprint and that about an minimum in my eyes. Bigger is better.
But to answer your questions.
1. An arowana is quite hardy but they are looked as an expert level fish because of its size. They do get massive and will ned an huge tank with an stable and large filtrationsetup preferably an sump and maybe an showerfilter. They are jumpers so you will also need to have heavy lids on the tank
2. It is okey with multiple arowanas if the tank is large enough. But as stated they need an really large tank.
3. You can keep other fish with arowanas as long as they dont fit in its mouth. As for parrots they are a bunch of *******s of a fish.
4. Substrate on the bottom is up to you what you find pleasing to look at. I tend to go to more of barebottomtanks in my fishrooms.
Thanks a lot. I can get a 200cm tank. 100 cm you mean the height or the width? I decided if I house one I ll keep it a arowana only tank.
Where do you live? Asian arowanas are banned in a few places.
Id say almost anywhere except for usa its legal to own an asian arowana.![]()
The majority of the members here are in the us.
Well that is true. But that dont answers his questions.
if hes using litres for water volume... id bet hes not in the u.s....
I am not from US. I am from UAE and Asian arowanas are legal here.
I suggest a much bigger tank than you're suggesting. More like 500 gallons not liters.
To answer one of the questuons not full answered yet. Arowana are usually very skittish and tend to bolt causing themselves injury if there is decor and sometimes just on the tank itself. One of the reasons it's better to be only fish in the tank. As kind of stated above Asian aro are smaller then silvers and black. Asian and jardini are about them same size and have simular tank size requirements. But still need massive tanks.
Thanks dear. I am thinking about a 2 metere long tank but not sure what is the recomended width and height. I am actually not sure about strictly going for an arowana because I am not an expert fish keeper. I had mbunas, blood parrots, oscars small size, ghost knives small and fish like that I kept before and rehomed them when they started to overgrown. I don't know if its a good idea to start with an Arowana as a first monster fish.