Which wrasse cannot be sustained by a tiny, isolated reef patch supporting small species?
Answer
Napoleon Wrasse
The scale of movement required by different wrasse species directly dictates the size of the habitat necessary to sustain them. Large, iconic species, such as the Napoleon Wrasse, have vast foraging ranges that must span across multiple interconnected reef systems over several days. Consequently, a very confined area, such as a tiny, isolated reef patch that might successfully support several generations of small, territorial wrasses whose range is centered around a single coral head, would be wholly insufficient to sustain even a single individual of the larger Napoleon Wrasse.
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