The southern spearnose poacher (Agonopsis sterletus) is a fish in the family Agonidae.Common names of Agonopsis sterletus at www.fishbase.org.Agonopsis sterletus at www.fishbase.org. It was described by Charles Henry Gilbert in 1898, originally under the genus Averruncus. It is a marine, subtropical fish which is known from the eastern central Pacific Ocean, including California, USA to Baja California, Mexico. It dwells at a depth range of , and inhabits soft benthic sediments. Males can reach a maximum total length of .
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