Dactyloscopus byersorum
Dactyloscopus byersorum Dawson, 1969
Notchtail stargazer
Dactyloscopus byersorum
photo by Robertson, R.


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Family:  Dactyloscopidae (Sand stargazers)
Max. size:  5 cm NG (male/unsexed)
Environment:  demersal; marine; depth range 0 - 2 m
Distribution:  Eastern Pacific Ocean from Mexico south of the Gulf California to Panama.
Diagnosis:  Anal soft rays: 31-35. Dactyloscopus byersi differs from Dactyloscopus heraldi in a number of features: one row of scales above the curved portion of the lateral line (vs. none); A 31-35, modally 34 (vs. 29-33, modally 32); upper lip fimbriae 13-18, modally 15 (vs. 11-14, modally 12); preopercular sensory pores increases in number with size, but more present in D. byersi of comparable sizes; chevron markings prominent on the side posteriad (vs. weak or absent) and absence of dark bars on the dorsum (vs. present) (Ref. 82814).
Biology:  Feeds on small fishes and invertebrates (Ref. 37955).
IUCN Red List Status: Least Concern (LC); Date assessed: 25 May 2007 Ref. (130435)
Threat to humans:  harmless


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