Hey friend, I suggest that if you really do like Arows you should purchase the correct size tank prior to buying the arow. Any arow, even black, will only last a very short time in a 55 until it outgrows it and is jammed in there like a sardine in a can. Is that what you want? If not, then purchase the right set up first and really enjoy growing your arowana out to adulthood.
Sure buy a black arowana for $250 or $300 and when it outgrows the 55 in a few months time and eats your rummy whatever fish they are be lucky to get $100 for it as their resell value is poor. Sounds like a good investment!
Oh so blunt but this man speaks the truth. They all grow huge even Africans and fast. You'll get maybe 6 months which goes fast and then $ for a bigger tank
