so i know that there are always reasons for them to grow slower or faster larger or smaller but i just need to know the avrage growth rate of Silvers, Jardini, RTG, Green, and Panda Xback. They will be feed a many diff foods and they will be growing out in my 180 gallon for my friends tank its around 100 gallon tank its L 12' W 6' T 3'. will have a few arowanas and hes still trying to get a PBB. ill get final stocking once i grow up these fish for him.

South Americans: 2"/month
Australians and Asians: 1"/month

Silver aro - 2-3 inches a month till they reach 12-14 inches then start to slow down.
Pearl aro - 1 inch a month till they reach 10-12 inches then start to slow down
Asian aro - 1-2 inches a month till they reach 12-14 inches the start to slow down.
Black aro - 1 inch a month til they reach 8 inches and start to slow down.
Spotted aro - ? I never experience keeping one.

RTG, GREEN and XBACK are all asian aros. By the way are you from the U.S.? Asian aros are illegal in the U.S.

yea well i have a cabin that im gona be hanging out in up in canada that has a fish tank in it its like 1 or 2 hours drive from the closets town so im gona have to drive them up there my self but yea my friend lives all year around in it so its kinda a grow out thing for him. then he will take to his house like 5 mins away and it has a huge tank like i said but its gona be his grow out tank but im gona be up there for like 2 or 3 hours to gives keys and help set up the tank. if he finds a PBB hes gona use the tank 2.

I don't understand what the measurements of this tank are. Is it 12 inches or feet? If it`s inches then it`s a lot smaller then 100gal. And if it's feet then it's way bigger. So which is it?

i believe he was estimating but yeah it is larger than 100gal of water, ' is feet while '' is inches