Towards which specific fish types do Yellow Tangs exhibit high intolerance during territorial disputes?

Answer

Other tangs or similarly shaped fish

Although the Yellow Tang is generally characterized as peaceful compared to some other members of the surgeonfish family, this temperament is highly conditional, particularly concerning resources. They become notably intolerant and aggressive when encountering other fish that directly compete for the same food resources or territorial space. This aggression is most pronounced toward other tang species, especially conspecifics (other Yellow Tangs) or any similarly shaped fish sharing the grazing niche. This territorial defense typically focuses on established feeding spots or resting areas once the fish has acclimated to its environment.

Towards which specific fish types do Yellow Tangs exhibit high intolerance during territorial disputes?
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