Bishop:
I wasn't trying to imply that most people's fish are wild caught, but moreso that from my understanding in this thread most specimen of some species are wild caught.
Inka:
I think a matter of priorities is disputable, however many of the issues of fishcare that come up on this site do include tank size and water quality. These are obviously significant issues to the animal's quality of life and I find it dubious to dismiss them for this argument. I'll use an analogy of humans for an example of environment and its size: I live in a dorm room which allows me adequate space to live, eat, sleep, breathe, and move around, yet I am still not as happy here than I would be in a house or apartment. The water and air that I receive here are chemically and biologically sound by generally all measurable standards, but I am still happier outside in fresh air with more room to move around and spread out in.
I also don't beleive that life span directly dictates life quality by any means. One may generalize that a longer lifespan would indicate a physically healthier creature, but that does not necessarily indicate happiness or quality of life. A human could live to be 120 years old, but what sort of physical condition do they occupy towards the end of thier existence?
As for the saltwater collection issue, I'm mainly reflecting on points and information expressed in this thread. I haven't been doing scholarly research on these topics.
I concede that harvesting wild fish might be a necessary process, but only if it is aiding in the conservation of the animals and thier habitats. This is not a reason to condone all catching of wild fish, but a reason to not prevent it in my opinion. Its great to support people who are doing this work, but I think it is a separate issue than debating ethics of the actual fish. That is essentially congruent to saying that someone who drives a hybrid or alternative fueled vehicle is not considering that they are hurting the workers in the oil industry.
Doreenjoy:
Extinct species are definitely an extenuating circumstance, not a main reason for catching wild fish, IMO.