I have to agree with the store person, it must be a TRIMAC......Any "flowerhorn" that size, looking like that, is a low grade.......I would pay $4.99-8.99 for a fish like that.......Your fish looks like in the vicinity of 3 inches, right.......$20 is a definate rip off if sold as a flowerhorn.........Then again, $20 for a juvenile trimac is also a rip........Looks like a female too.........Most well-gened male start growing a nuchal hump at around 2-3 inches.....Hey, keep taking pictures of the little booger as she grows up...You nver know, it may blossom into one of those rainbow monsters we see tankbusting Japanese tanks...........