Join Date: Oct 2010
Location: Victoria, Australia
To many breeders, the most responsible thing is to cull/kill those fish that don't come up to scratch. Sometimes it can be difficult enough to find homes for all the nice fish out of a spawn, let alone those fish that are duds.
A single spawn can give you a couple of hundred fry. That is a lot of money, space and time that has to be dedicated to each of those fish. Why waste resources on a fish that is just going to have to be given away?
I know that most breeders outside of the big farms in Asia aren't making a living off their fish, but it is nice to actually break even every now and then.
Say 50/100 bettas from one spawn have terrible fins, bad scaling and no ventrals. There is not a market for those sort of fish, so why invest all that time into raising 50 fish that are going to struggle to find a good home.
I would rather cull down to the best of the best and know that those fish are going to find good homes, rather than have to dump 50 culls on my local fish store and pray that they don't end up in a dirty bowl on someone's kitchen counter.
There's nothing wrong with a quick, humane death. Culling has happened ever since man first decided to domesticate and purpose breed animals.