What is the immediate danger associated with stressing a boxfish in a closed aquarium system?
Answer
Release of ostracitoxin, potentially killing all tank inhabitants.
When frightened, injured, or stressed, boxfish can release a toxin called ostracitoxin from their skin into the water, which can rapidly poison and kill every other organism in a closed home aquarium.

#Videos
Do you really want a Boxfish? (Ostracion cubicus) - YouTube
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