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User1
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View BadgesI think most long term hobbyists don't view rehoming fish as they grow as a means of sustainability.
This is true. Rehoming is not as simple as playing a container in the tank and telling Mr. Fish hey, enter container. It may be a quick trap and rehome, it may not. It may be days, weeks, or never. If never then you are removing corals, rock, and possibly water to catch which will stress everyone out to include fish.
This is over simplified at the end of the day. It may be easy. It may not. I personally do not buy fish with this criteria unless it is a known upgrade. Even then it has to be a lower risk factor. I had a Lt. Tang a few years back that I picked up. Probably 3" when I got it. Within a year it was pushing 8" in size. That one caught me off guard I must say but this was in my 210 gallon.
Great point regardless of fish type.