Excitement or timidness, this is normal when something is new to there environment as in food. You should see an Achilles being fed or spooked turn such a pale colour you think there dead.
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360 gallon sps reef, 180 gal sump, bubble king supermarine 300, 4xmp40Wes, 2 x 6215 tunze waveboxes, 4 ghl mitras
360 Reef Tank
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