the biggest ones will get about 8" if male. you can usually keep a pair in a 55 or one by itself in something a little smaller if you keep up good maintenance.
Really depends on the type of Green terror. IMO. That being said the only one that really differs from the other two are the Peru based vs. the Ecuador based.
males can get about a foot or so, although smaller is more likely. a 75 is good for a male. They aren't as terrifying as the name suggests, but they aren't docile either.
Really depends on the type of Green terror. IMO. That being said the only one that really differs from the other two are the Peru based vs. the Ecuador based.