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Grallenia nigrimarginata Allen, Erdmann & Cahyani, 2024 |
| Family: | Gobiidae (Gobies), subfamily: Gobiinae | |||
| Max. size: | 1.23 cm SL (male/unsexed); 1.42 cm SL (female) | |||
| Environment: | reef-associated; marine; depth range 15 - 25 m | |||
| Distribution: | Western Central Pacific: Indonesia. | |||
| Diagnosis: | Dorsal spines (total): 7-7; Dorsal soft rays (total): 8-10; Anal spines: 1-1; Anal soft rays: 9-10. This species is distinguished from its congeners by the following set of characters: dorsal rays VI + I,8-10 (usually 9); anal rays I,9-10 (usually 9); pectoral rays 15-17 (usually 15, rarely 17); absence of elongate dorsal spines; absence of pelvic frenum; absence of cephalic sensory canals and associated pores; total longitudinal scales 19-26 (mean 22.6), including 3-6 (mean 4.6) scales immediately behind pectoral fin and 15-21 (mean 18) on posterior portion of body; main mass of body scales extending forward from caudal-fin base to about junction between dorsal fins; colour in alcohol pale yellowish and mainly unmarked except four widely spaced; tiny brown spots or horizontally elongate streaks in mid-lateral row on side of body and clusters of melanophores on side and frontal region of head; male clearly distinguished by black margin on anal fin (on both live and preserved fish); and red or orange stripes on dorsal fins of live individuals (Ref. 138626). | |||
| Biology: | ||||
| IUCN Red List Status: | Not Evaluated (N.E.) Ref. (130435) | |||
| Threat to humans: | harmless | |||