Any corals in a predator tank?

[i have crabs]

im surprised the puffer didnt chomp everything, ive seen hem do it plenty of times,
i think it depends on the type of fish you plan on keeping,normaly i would say no chance with puffers but i guess thats out the window,groupers/snappers/sweetlips/lions wont touch any corals but id be carfull with triggers/puffers and others with sharp teeth