A tall order here but out of all of the fish I'm tired of seeing being rehomed over and over again: Oscar's and common plecos! ?
I just think if the store is going to sell larger fish like oscars, plecos, large marine Angels and tangs, they need to have a tank for sale in the store that can house them adequately. The largest tanks I see at petco are in the 50-60 gallon range. As an employee you're pretty much set up to point at these inadequate tanks when asked which tank is needed for these fish.
We have a Pet's Barn too! Bad selection but they have a guy that's a little knowledgeable but the rest are clueless lolWe don't have petco here but a similar chain called pet barn. The fish section is usually a disgrace.
Really, there's no reason a big box store can't have any fish in stock, if they hired good knowledgeable staff who actually cared and took care of their stock properly they could easily become just as good as any LFS.
Their customers generally seem new to the hobby but with some guidance they can become experienced and start a whole new generation of fshkeeepers.
It's not the fact they sell any type offsh that's the proble, it's because staff who don't have a clue are selling the,to customers who also don't have a clue
Petsmart is the one with the big tanks. They always have 75 - 150s in there, usually for great prices too.