IUCN threat status:

Least Concern (LC)

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A. trigonura belongs to the Heterabralia subgenus. It is characterized by having two or three hooks on the manus, the left arm hectocotylized, and complex eye photophores. This species resembles A. andamanica but the latter is separable by its robust tail and dark body color.

Figure. Photograph of a live A. trigonura in a shipboard aquarium, Hawaiian waters. Photograph by R. Young.


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