if you type srbta, it becomes a link with the story of the "sherman" rose bubble tip, so click on "srbta". I may completely off base, but it was said that particular strand did better in aquariums.. in my limited experience I haven't had issues with the several bta's I've come across. whether they were sold to me as sherman or not. When I compare the two I feel the sherman has a deeper red to it, while my normal rbtas have red and white striations. hth