They look completely normal to me. My angler has grown all sorts of funny little protuberances over time. I believe the ones your has are in an attempt to mimic the same growths you can sometimes see on the rock in our tanks. The ones on your angler look just like the small spiny red (calcareous) foram, Homotrema rubrum. Growing such things seems to be part of the angler's camoflauge mechanism.
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Current Tank Info: Tankless due to recent move
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