Quote:
Originally Posted by AlbertaCutthroat
Unless something has changed very recently "triploid" rainbows in Alberta are not confirmed sterile as not every fish is individually tested. The only fish being produced in Alberta that are guaranteed triploid (each individual tested) are the grass carp. If they are producing what appear to be viable gametes they are most likely capable of spawning (if habitat for spawning was available). Additionally, many lakes now stocked with triploid rainbows were previously stocked with plain old diploids and therefore you will still see male and female fish capable of spawning.
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By gametes, do you mean eggs, or roe? I know the females produce eggs, but always thought the males were sterile. Also I thimk they need running water as well as gravel bed (river, creek, stream). I was wondering if BOTH the diploids and triploid females produce eggs. thanks.