Let me preface this to say that I am a novice at this. I don't have a tank setup yet. I am still purchasing equipment, building my own tank stand (you can read the thread here:
http://www.aquariacentral.com/forums/showthread.php?t=119039), and reading lots and lots. But I figure that I am in a specific demographic that has certain needs.
4) The 3 (yes only 3 besides Petsmart and Petco) LFS in my area specialize in Saltwater.
I have been to 7 different stores (both chains and LFS) and have also found that most LFS specialize in saltwater. I believe that this is probably for a few reasons. First, the chains specialize in freshwater and competing against a chain is difficult. Second, there is probably more of a markup on saltwater fish, since they are more expensive in the first place.
If you are going to stock freshwater fish, then I would price the most popular fish (neons, corys, otos, etc) as low as possible (maybe even at cost) to compete with the chains and bring in customers. I would also try and carry species that the local chains don't carry (this way you aren't directly competing), such as espei rasboras or pentazona barbs.
keep tanks clean, no visible dead fish
:iagree: As a beginner, that is a real turnoff to me and would prevent me from buying anything else in that tank. In other words, a dead or very sick fish equates to lost sales.
keep up with labels on the tanks. this was discussed in another thread earlier. it seems like a lot of places have mislabelled tanks - either the label identifies a fish that is already sold and gone, or there is no label for a fish that is in the tank.
Also, from a beginner's perspective, it is nice to have labels that provide lots of information (such as whether a fish is community/semi-aggressive/aggressive, the size it will grow to, the pH and temp range, etc).
And if you don't carry something, offer to special order it (as long as it is coming from one of your suppliers). Many of the chains don't do special orders, so once again this is a good way to compete against them. For example, I want to purchase a 40 gallon breeder tank. Only PetsMart has one, but it comes as a Topfin package (with the filter, light, hood, etc.). I don't want everything else, just the tank. All of the LFS were able to order it for me (and I am glad to say that I should be getting it today).
stay away from dyed or tattoed fish.
:iagree: Even genetically altered fish (glofish) are a huge turnoff for me.