Trimma tauroculum Winterbottom & Zur, 2007
Bullseye pygmygoby
Bullseye pygmy goby
Trimma tauroculum
photo by Winterbottom, R.

Family:  Gobiidae (Gobies), subfamily: Gobiinae
Max. size:  1.92 cm SL (male/unsexed)
Environment:  reef-associated; marine; depth range 27 - 73 m
Distribution:  Western Pacific: Palau.
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 9-10; Anal spines: 1-1; Anal soft rays: 8-8. The species is characterized by the absence of scales on the cheek, opercle and midline of the nape; fifth pelvic fin ray branched sequentially once; a moderate interorbital trench; a short and narrow postorbital trench; color of living specimens red with a white belly, a large brown-black spot larger than the eye immediately above the pectoral fin base and numerous smaller dark spots across the nape; and in preserved specimens the dark spots remain but the ground color is yellow. Differs from its congeners by the very large 1.25 eye diameter brown-black spot above the pectoral fin base and the rows of smaller brown spots on the nape separated by a honeycomb pattern (Ref. 59339).
Biology: 
IUCN Red List Status: Least Concern (LC); Date assessed: 07 September 2021 Ref. (130435)
Threat to humans:  harmless
Country info:  Type locality, off the west coast of Pelilieu, ROM 80302 (holotype of Trimma tauroculum, 1.57 cm SL, female). So far only been found on the outer reefs of this country, at depths generally greater than 25 m (Ref. 59339).


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