I've had him 3 years now and he's about 25 inches, never had any reason to fear a bite from him till he got me last month. The best part is I had a friend over who had never seen a aro up close, he was right next to me when I got bit and naturally I flung my hand out of the water (and the aros mouth lol) throwing a good amount of tank water and blood worms all in my buddy's face. .. It made the bite well worth it 
Sent from my SGH-T889 using MonsterAquariaNetwork App

Sent from my SGH-T889 using MonsterAquariaNetwork App