juanveldez said:heres my take on this. for 2 JDs,@ 1.5 inches a 20 is to small. I would do it in a 30 and let them grow out, not for too long though. I happen to disagree with most everybody. while a JD might be happier in a 55 you can easily keep them in a 45 provided that there is only one JD. my 8.5 inch JD is very very happy in a divided 55 sharing the tank with a 6 inch female Gold Suam. but depending on the fish, they can range from hyper agressive to fairly laid back. mine is not quite hyper agressive but is very agressive espcially when I am feeding him. he loves to eat from my hand and always hits so hard that it scares me. it isn't that it hurts cause it doesn't.
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ya i want them to be aggresive thats the main reason i got them, also when i have people over at my house they will be entertained by there aggresivness its quite fun to watch, i have actaully already started looking at tanks and i find free ones in the paper and on the internet im surprized people just want to give em away..i should have a bigger tank within a couple months, im sure they will be ok for a while in this tank..