Bas Pels wrote:Does anyone have any information about the survival rate of the 'parent' fishes?
I've talked to a czech researcher who had experience with their fish-breeding industry, and according to him it is common that the parent fish does not survive. Apparently the deaths are caused by a number of reasons, from secondary infections from impure hormone extracts and dirty (re-used) needles, to the sheer damage caused by the injection.
Or, as he put it: "It's not surprising that fish die when you jam a big dirty needle into their brains!".
That said... intensive, industrial, animal husbandry, where efficiency is all that counts, is often brutal and distasteful, and I don't expect high-intensive aquarium fish breeding is either better or worse than any other.