What are some good hearty saltwater fish?

I have a yellow tang, 2 clowns, zebra damsel, panther grouper i have had for about 2 years, ive tried having a blue hippo tang, he died 3 weeks after i had him, copperband butterfly he died 2 weeks after i had him, what are some good hearty fish to buy like clowns and yellow tangs??? i heard triggers are hearty but theyre to mean, any suggestions?