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The only real arguement I have accepted is that breeding your own feeders is more humane than buying frozen fish such as whitebait or lancefish.
Not everything was meant to survive.
An elephant takes a step and six grasshoppers are crushed. A branch falls off a tree and eighteen insects are drowned. There is a rockslide and the burrows of three platypus are caved in. A big fish eats a little one. A disease is introduced into a cave and a whole flock of bats dies. A meteor hits the earth and there is a mass extinction of dinosaurs. A puddle dries up and the tadpoles in it suffocate.
I wasn't meant to survive. My mother had pre-eclampsia, which resulted in my delivery by emergency caesarean, six weeks early. My lungs collapsed when I was two days old. Without modern medical technology - and several hundred thousand dollars - both my mother and I would have died. But I survived anyway because somebody cared for me, and somebody cared for my mother, and somebody asked that the doctors do something.
For my fish I am that somebody. But I see my duty, as the provider of care for dependant animals that have no ability to run away as a cat or dog might, to be to provide for them the best life that I can, not to ensure they survive at all costs. I will sooner euthanise a fish I cannot treat than see it suffer - and I will sooner feed excess fry to a larger fish than let them suffer in a filthy, overcrowded tank.
When I started keeping livebearers, I bought no males. I understood that they would probably breed anyway because I did my research. But I thought, ten to twenty fry per female per month? No problem.
Wrong. Fifty to sixty fry per female per month, because I kept them in good conditions and fed them properly. My LFS is also unable to take fish that are less than an inch long. I quickly came to the realisation that I would be unable to cope with the hundreds of fry, not because I didn't want to but because of a lack of space.
I do use fry as feeders. I don't raise them intentionally for that purpose, and if I have plenty of room, I save all the fry that I can. But when I don't have room, I feed them to the adults. I breed selectively - if my best female is dropping and I have no room, I don't let her fry get eaten. I feed the adult fish some of the fry from another drop. I agree totally with Teflon. How can it really be worse to be eaten at a few days old than to live in a tank with far too many other fish, overcrowded, cramped and underfed, dying slowly of starvation or disease? If a female drops thirty fry every month for eighteen months, that's over five hundred fry in her lifetime. If just two of those 500 - 1/250th of the fry that are born by a conservative estimate - made it to adulthood, her job is done. She and her mate have been replaced. Livebearer populations are relatively stable. Nobody carries on about the fry that were born in the wild and got eaten.
Why? They weren't born in a glass tank. We didn't see them. Why does everybody feel better about letting fry born in a community tank get eaten? Because they didn't make the decision. If I wasn't the one holding the net, tipping the tiny babies into a tank with predators in it, knowing that their lives would end in seconds, it doesn't seem as bad somehow. I don't like using my fry as feeders, but I see no other option. I honestly think it would be crueller to keep them alive. It all comes back to Colin's point. We conveniently forget that a couple of days ago, that steak was a cow, walking around the paddock eating grass and scratching another cow's back. I'd be a hypocrite to rub it in - I have never seriously considered becoming a vegetarian - but it's a good point. Humans are visual creatures. If we don't see it we pretend it isn't happening. Why do you think the Africans are still starving and the gang warfare is still going on on the streets? We haven't been there and been exposed to it, so we forget all about it.
LOLWe conveniently forget that a couple of days ago, that steak was a cow, walking around the paddock eating grass and scratching another cow's back.
it may not be ideal keeping fish in tanks but because we do several species of fish have been saved from extinction.it is not ideal keeping fish in tanks but we humans will keep doing this as we can basically