So you say that the Matted file fish does not eat aiptasia but the bristle tail does.
Well Live Aquaria says
The Matted Filefish is also known as the Bristletail Filefish, Matted Leatherjacket, Tomentosus Filefish, or Aiptasia Eating Filefish. The body is a mottled green, brown, and tan coloration.
So which is it, I'm confused and need aiptasia control
Matted Filefish and Sea Grass Filefish ,Bristletail,Leatherjacket,,Aptasia Eating Filefish are the same (different names,but same fish)and has the reputation that it eats aptasia. I suppose every once in a while God creates a "Dud", that doesn't,but most people are pleased with the little guys.If you want to ,make certain you are getting the proper specimen,just confirm with the people/ retailer , that you are buying it for that purpose (aptasia).That is the only reason I purchased mine.I never had really ever considered one otherwise,but I had lots of aptasia.It turned out to be a very interesting fish...and they love Aptasia,unless you buy the odd one that doesn't.I know they do not come with a money back guarantee,that they will. I guess it is such a wonderful fish it is blessed with so many different names..Acreichthys Tomentosus( Filefish )is the scientific name.