I think this could be a great thread idea.
Many LFS's will have juvenile tangs, triggers, batfish, parrotfish, etc. And few, or no adult fish, for comparison.
Newcomers buy these cute fish without knowing the facts, or convince themselves that there's no way this little fish will grow beyond the capacity of their system.
If fed properly, the above fish will quickly outgrow many/most tanks, fight and kill tankmates, live with stress, and in many cases die. Often 5 or 10 years sooner than their life expectancy.
Seeing actual photos of systems with obviously poor choices could help educate others, and prevent them from making similar decisions.
It could also help prevent people from buying "just one more fish", knowing that some of their current inhabitants are destined to grow significantly larger.
Did you just make a point? This is madness...Thanks TripleT.