Thanks for all the replies!
I know their delivery comes in on Wednesday and are available to buy on Thursday, but by then a lot are already dead. I have to sift through all the packets just to find some that are alive!!
I dont think there's much chance of getting the owner to rinse them. They already come in a sealed bag from the supplier. Also, they know virtually nothing about fish (cheap teenage labour), and most of the times they dont even remove the dead fish that must have been there for hours. Trouble is this is the only place nearby that sells live food.
It was the decomposing of the dead ones that i was worried about. Are you saying that if i rinse the dead ones they will be ok to be fed to the fish? Or when i rinse them, the dead ones will float and should be removed?
Thanks