Synirr said:
Tokis-Phoenix, I think saying it is ok to cull livebearer fry but not betta fry is a bit of a double standard. In the same way that you know breeding bettas will get you huge numbers of fry, you know that keeping both male and female livebearers together is going to get you fry... and even just purchasing a female that has been mixed with males at some point might get you fry as well. If you're going to say it is irresponsible to cull betta fry, then I think you should at least be consistent and say it's irresponsible to cull fry, period.
For the record, a lot of breeders (probably even most of them) do cull, but it's up to the individual to decide for themselves whether or not they're comfortable with that.
Because female livebearers can store sperm in them as long as they have been in contact with one male once in their life and can have up to 7 pregancys in the absense of a male after that, so stocking an all-female tank of livebearers will not prevent you from having fry as long as the females have been in contact with a male at the breeders or lfs, which the majority have.
When you consider mollys for example can have over a 100fry each pregnancy and your average pregnancy lasts a month, they are going to be churning out tons fry for a long time.
All male tanks are much harder to stock than female ones and you will often get alot of harrassment and deaths if not stocked very carefully- it all comes down to the individual males personality.
Livebearers do not like to be on their own due to being very sociable fish so keeping a single male on its own is not fair on it, its like keeping a neon tetra all on its own.
My point is, is that unless you have an all-male group of livebearers which are hard to stock and not exactly perfect as the males will always pick on each other to a certain extent, you will always have fry and lots of them wether you like it or not.
On the other hand you cannot keep male bettas together so that is out of the question and a female betta cannot have fry without a male present in the tank, unlike female livebearers, so if you do not want betta fry you can easily avoid them.
Bettas only have fry if you want them to, livebearers will have them regardless of wether you want them to.
This is why i think it is acceptable to cull livebearer fry since it is near impossible to raise every single one of them and find homes for them all without them inbreeding with each other as lfs's only take in livebearer offspring if they are sexually mature or in the case of mollys and swordtails- half grown; but when you consider molly and swordtail fry take up to 6months on average to reach the half grown size and have more fry on average then platys or guppys, its just as difficult...
When a newb asks what would be a good fish to start off with, so many people recommend them livebearers but so few warn them of their notorious ability to breed on a large and fast scale.
So to top it all off, i do not think i was hypocritical in saying its acceptable to cull livebearer fry than betta fry as in the majority of cases of livebearer fry it is for the best for the fry and the owner as it is pretty unavoidable but with bettas because they will only have fry if you make them, because you took the choice to make them breed i think you should also take the step of also raising them 100%.