Yup, by many of them...
I can hand feed most of my fish, when my foxface takes food, he actually will bite onto one of my fingers and won't let go. It doesn't hurt though.
My blue throat trigger is a different story, he sometimes will nip me, if I am working in the tank. NOW THAT HURTS!!!! He has sharp teeth. I always end up cleaning up water, as I fall back, splashing water everywhere.
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Setup: 180G DT, 105G Refuge (approx. 300lbs LR, 150lbs Aragonite)
Hardware: Super Reef Octopus SSS-3000, Tunze ATO, Mag 18 return, 2x MP40W, 2X Koralia 4's Wavemaker
Lighting: 5ft Hamilton Belize Sun (2x250W MH, 2X80W T5HO)
Type of Aquarium: mixed reef (SPS & LPS) with fish
Dosing: Mg, Ca, Alk
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