My LFS 100m up the road from me dont even know what is a DSB.LPS,SPS or a MH ..... the list go,s on, but They sell Marines. I am NO expert and only know stuff out of my own experiance wich is not much. As long as they can make a sell they are happy.
Another well known LFS in Town, are the only one i know off who will rather try to keep the client happy,example: I ones went there and saw a Bi-colour the man did not want to sell it to me cause it was kind of skinny and the purple couler was more white than purpel. I asked for some food and it was eating HE then still didnt whant to sell it to me cuase it didnt look healty anouth to him, he even offert me another angel at less then half the price of the bi-couler, long story short i bought the bi-colour, even at the counter when i paid he asked me am i sure i whant to wast my money cause this fish will die, Its now 8 months later and the bi-couler are one of my best looking fish in my tank and twise the size.
5 months after this sale i walked into another shop and saw this man is working here know (did not ask why) he ramemberd me and couldent beleved the bi-couler looked so good after i showed him a photo.
My point is if this was the LFS 100m from me, they would have sold me this fish noprops just to make the sale.
Who knows , maybe i was just lucky,but that to me is the way all the staff sould be at a LFS.