do angles go for nori?

All my angelfish love it ! You don't need to put too much, I only cut a square of nori about 2 inches for my 3 angelfish and that is all they need for each day.
 
Probably depends on the fish as well, my emperor angel will eat nori nonstop (he seems to consume more than any of my tangs!) but I've never seen my coral beauty, flame, or rusty angels touch it. On the other hand my dwarf angels will all eat flake, frozen, or pellet foods while the emperor won't touch anything but frozen mysis / brine cubes, sinking pellets, or nori.
 
It's worth a shot. My majestic, multibarred, and singapore all love it. My potters, not so much. I would wrap a small piece of nori on a small segment of pvc with a rubber band and put it in the tank. Some fish have a hard time with a clip at first.
 
all my angels get excited about nori, same as or more than my tangs !

emperor is a terror, I have not seen anything that fish wont eat ! mine literally eats more algae and ... than my tangs...
 
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