Mine's is already more than 6 inch easily, he came close and I measured him 7inch with a tape measure. Fat belly too! I've noticed he's switched from cleaning stones and now prefers going round sucking gravel into his mouth, then spitting it out. I assume hes picking the algae off them, which is cool! Lets see pics of the new flag when the attachments are up. I heard your barb pics are bannished to the abyss though...(not coming back) Mwahahah.