Fish Recommendation Needed

[Fellow]

I am looking for a fish that is reef safe that will pick at the macro algae (not Hair Algae) that sprouts up every now and then on a few of my rocks. It also needs to eat frozen carnivore food that I feed the rest of the tank.

The tank is a 3 foot 70 gallon tank so I would like to have an appropriate sized fish as I have no intention on upgrading in the near to long term.

Current Occupants:

- Mystery Wrasse
- Flame Hawk
- Algae Blenny
- Clarkii Clown

Thanks.

Kyle