Anglefish is one of the best tank mates for clownfish. So, you can combine the two in the same tank.
On the other hand, if you want to combine maroon clownfish and ocellaris clownfish in the same tank and think they are from the same family, then you should abandon that idea. This is because maroon clownfish have a much more aggressive nature that can bully and even kill ocellaris clownfish.