What specific geological features, other than exposed rock, do Yellow Tangs frequently use as foraging areas supporting algal growth?
Answer
Rubble zones and rocky outcrops
The habitat utilization of the Yellow Tang is dictated by the presence of food, which is algae growing on hard surfaces. Therefore, they are frequently sighted near areas that provide stable substrate for this growth. These preferred areas include rubble zones, which consist of broken coral fragments, and rocky outcrops. These structures offer both attachment points for the turf algae they consume and offer immediate proximity to crevices and ledges they use for nighttime shelter. In contrast, areas consisting purely of soft sand flats are generally avoided during their active, feeding periods.

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