i haven't found any lfs that will take anything for credit...
Most chains work on the policy of "if there isn't a paperwork trail behind it we can't sell it". For accounting purposes every sale must be tracked and accounted for.
Some stores get around this by doing "adoptions". Basically if you have a whole setup they can give away they will often toss the setup on a table or shelf near the entrance and put up a sheet explaining the situation. This isn't likely to happen with fish because the tanks aren't the easiest to move (big enough to safely move full = too heavy to move full). It is extremely common with rodents.
Local fish stores are the only ones that'll do donations or credit since they don't need to be nearly as strict with the accounting.
They also have galaxy rasboras but a bit pricey @$6 each.
They do keep track of the deaths. I believe it goes in as "shrink" which is often where shoplifting loses go also. It is pretty easy to track if you have a proper papertrail.always wondered how the accountants kept track of all of the deaths of every single fish..... I disagree about the part of being STRICT in accounting.... if they were, every single employee will be combing the tank for bodies of fish, and doing paperwork every single time a fish went missing into another fish belly or got sick or went bye bye to the fish bowl in the sky.
its not the trail of paperwork if it was.... the stacks of paperwork would be so sky high, the bread and butter fish would cost the customer as much as gas prices goes for those days now than in 1980s. A fish does not have an ID on itself, so therefore a trail of paperwork behind it is silly to say when a molly in the store died, and a customer turns in a free molly. it's a win-win situtation as who cares about the paperwork if its a different molly, it did not come with a vin number or to be specific a CITES number. Oh yeah... I forgot the part that people are sue-happy in this society so everything gotta be followed per regulations/rules.
I'd say your tank needs more of a centerpiece fish rather than another school...something like a single gourami or betta or some rams, apistos, etc.