My honest opinion... a 180g is good for housing arowana and give or take 3-4 cichild fish about 5/8" range
AND THATS ALREADY OVER DOING IT!
I'm having my eye on several 180g tanks i konw around my area.. and I'm thinking of housing 2 Arow in the future with Jack Dempsey and maybe one Flowerhorn..
But eventually fish will get to big and there will be aggression....
If your planning on getting something like African cichlid fish.. then 180 is fine.. but 220g would be nice for bigger fish..
AND THATS ALREADY OVER DOING IT!
I'm having my eye on several 180g tanks i konw around my area.. and I'm thinking of housing 2 Arow in the future with Jack Dempsey and maybe one Flowerhorn..
But eventually fish will get to big and there will be aggression....
If your planning on getting something like African cichlid fish.. then 180 is fine.. but 220g would be nice for bigger fish..