Half of him! Their tail is about half their length, so he might only look like he's 2-3 inches, but with the tail he's 5-6 :)
Think like measuring a halfmoon betta with his fins haha!
He's also facing us, so you get some of that foreshortening problem!
To be honest there is a lot of debate over tank size. Some people will say "No less than 30 gallons per axolotl!!" some people will say "Two adults are fine in a 10 gallon"
Part of the thing is, these guys are studied in labs--in betta barracks no less. So they DO survive in small areas of water. How small you decide is too small is up to you and your axolotl. Some of them like to swim, others will sit their all day. It's like how some bettas are happy in a 1 gallon, and some will just adore a 10 to swim around in.
Last edited by purplemuffin; 12-10-2011 at 03:13 PM.