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Sicyopterus rapa Parenti & Maciolek, 1996 |
| Family: | Gobiidae (Gobies), subfamily: Sicydiinae | |||
| Max. size: | 7.47 cm SL (male/unsexed) | |||
| Environment: | demersal; freshwater; brackish | |||
| Distribution: | Oceania: French Polynesia. | |||
| Diagnosis: | Dorsal spines (total): 7-7; Dorsal soft rays (total): 11-11; Anal spines: 1-1; Anal soft rays: 10-10. Distinguished from congeners by a low number (approximately 45) of teeth on each premaxilla, and ventral body surface unscaled in largest adults; interspinal membrane or frenum thick; branched caudal-fin rays 13-15; vertebrae 10+16=26; no rakers on first gill arch; transverse scales 44-62 rows; unscaled dorsal surface of head; operculum, cheeks and lateral portion of body to first dorsal fin irregularly scaled with small cycloid scales; ventral surface of body unscaled in largest adults, otherwise incompletely covered with small cycloid scales; remainder of body to caudal peduncle covered with imbricate ctenoid scales; anterior portion of caudal fin rays with smaller ctenoid or cycloid scales in one or two discrete rows dorsal and ventral to each ray (Ref. 12759). | |||
| Biology: | ||||
| IUCN Red List Status: | Endangered (EN); Date assessed: 30 August 2011 (B1ab(iii)+2ab(iii)) Ref. (130435) | |||
| Threat to humans: | harmless | |||