I have 2 oscars that are 9 1/2inch in a 125G tank i am very keen on getting a black arowana would thay all be ok in a 8x3x2 tank it would have a sump to what ever size i needed it to be as i would make the tank and sump i know i would need to grow the arowana to a bigger size befor i add them togeather.
Cheers
Cheers