Are petstore goldfish given growth stunters?
Last year I set up a goldfish tank. Over the past 18 months I have had 3 different goldfish that I bought from a chain pet store up and die on me. None of them grew much past the size that I bought them. Each seemed to be doing ok until I found each one curled on the bottom of the tank. One that is currently dying has had a bit of trouble with mild dropsy also but has recovered from it each time until this last week. It does not have dropsy just now but is curled up and breathing very slowly.
In contrast the 2 goldfish I bought from an independent store at the same time ( because of the colors they have) have grown fairly rapidly and are about 2 1/2 times bigger that the chain store fish.
I know people who have bought from the chain and have done ok. Perhaps the batch of fish was sickly to begin with or do they give growth stunters?