i had 6 aro's in my tank
four 24" silvers, one 24" black, one 16" red tail gold and one 12" red tail gourami in a 240 gallon 8' x 2' x 2' with no fighting but a lot of splashing when it comes to feeding time.
at one time i had a green arowana in there too. until his gill started to curl, so i gave it away to someone who can deal with the surgery every other month.
now my tank is less crowded and my folks are no longer complaining about the water splashing all over the place.
your 1000 gallon should be perfect.
four 24" silvers, one 24" black, one 16" red tail gold and one 12" red tail gourami in a 240 gallon 8' x 2' x 2' with no fighting but a lot of splashing when it comes to feeding time.
at one time i had a green arowana in there too. until his gill started to curl, so i gave it away to someone who can deal with the surgery every other month.
now my tank is less crowded and my folks are no longer complaining about the water splashing all over the place.
your 1000 gallon should be perfect.