MrTuskfish
Team RC
I don't think anyone is an expert at telling the two apart based on juvies, so don't feel bad. In the newer pic you can see a blue line developing below the dorsal, in person, it's thickest over the orange stripes. He's a great fish, I don't really care where he came from, I'm happy with him either way, it's just fun to guess and document.I have a feeling he may be an intermediate between Coral Sea Aussies and Indo-Pacifics. Time will tell.
Sorry to derail your thread namxas and seahorsedreams. As far as growth rate, they aren't terribly slow growers but definitely not the fastest either. In the same amount of time, my yellowfin tang in the same tank has grown an easy six inches larger.
Some of the tusks from Bali are supposed to have a lot of the Aussie color; but if yours is showing blue along the dorsal----I'll bet he's Australian. You're right, they don't grow real fast lengthwise; but sure do bulk up. Most pics just don't show how thick & robust HTs are.