Which fish are the most bastardised by the pet trade?

For every thread that's "what's the best way to 'fix' dissassociated Apistogramma/Altum Angelfish/whichever guppy crossbreed here?", I respond: "the pet trade can fuck right off". <br><br>Anyway, I'm currently researching Midas Cichlids and I was astounded by the sheer amount of variation that has been squeezed out of this fish. Which now leaves me wondering: which fish is the most fucked with by the pet trade?