I don't, but then again I only buy captive bred. There is undoubtedly death and suffering in the captive bred supply chain as well, but I have a hard time believing that it's equal to or more than with wild caught fish. At the very least, fish that are born in the ocean stay in the ocean when you buy captive bred.
Regardless of whether or not you feel guilty about our hobby, we really need to be careful about how this hobby is perceived. The public doesn't have the best understanding or respect for what we do, and there are regular attempts to shut this hobby down. The Hawaii ornamental collection ban is a great case study for why we need to be more careful about how others, not just ourselves, feel about what we do.
This
presentation by Dr. Chad Callan sums it up well, but the narrative goes something like this. In 1998, the state of Hawaii performed a study to determine the impact of marine ornamental collection on fish populations. They estimated some populations of popular aquarium fish (yellow tang, Achilles tang, etc) had declined by between 50% and 60%.
Two year after that study was completed, Hawaii set up a few different types fishing areas. The first was a marine protected area (MPA). Marine ornamental collection was banned in these areas. The second was a fish recovery area (FRA). These are areas where fish stocks had been reduced by ornamental collection. Collection was banned in these areas so that fish stocks could recover. Finally, there were "open" areas where collection could continue. Over the next 14 years, yellow tang stocks were monitored in these three areas. The data are below:
In this graph, the MPA is the baseline. Note that the red line, the FRA, recovered to baseline in just about 4 years. The open area where fishing continued stayed lower. The important takeaway is that though the open area trends up and down, it trends the exact same way that the protected area does. More importantly, after almost 15 years of yellow tang collection, the open areas had about the exact same population of yellow tang that they did when the surveys started (about 12/100m2 vs 11/100m2). In other words, collection had almost no effect on the wild populations of tangs around Hawaii.
Despite the fact that the data show fish stocks remaining stable, Hawaii banned collection in 2017. This is pretty remarkable, and I don't think many of us really understand the implications. The collection ban in HI happened not because what we're doing is harming the environment, it happened because of politics and emotions. If bans are happening without data because of emotion and NIMBY-ism, Hawaii and Fiji may only be the beginning.
Unfortunately, perception is reality. It doesn't really matter that we don't feel guilty about keeping fish because we "treat them like pets." As long as the public perceives our hobby as "bad," we're going to have targets on our backs. I'm not saying that we should feel guilty for what we do, and I don't know what the solution is. But the discussion needs to be broader than just what we think about the ethics of our hobby. We also need to consider how outsiders perceive our hobby.