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Eviota dorsopurpurea Greenfield & Randall, 2011 Purple dwarfgoby |
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photo by
Randall, J.E. |
Family: | Gobiidae (Gobies), subfamily: Gobiinae | |||
Max. size: | 1.74 cm SL (male/unsexed); 2.19 cm SL (female) | |||
Environment: | reef-associated; marine; depth range 8 - 30 m | |||
Distribution: | Western Pacific: Papua New Guinea. | |||
Diagnosis: | Dorsal spines (total): 7-7; Dorsal soft rays (total): 8-9; Anal spines: 1-1; Anal soft rays: 7-9. This species is distinguished from its congeners by the following set of characters: a dark band on lower body from snout, across the lower half of the eye back to the caudal-fin base ending in a semi-circle; larger specimens with pectoral-fin base having a reversed L-shaped row of small black dots; cephalic sensory pore system lacking the PITO and IT pores and the AITO pore enlarged; dorsal/anal fin-ray formula usually 9/9; pectoral-fin rays simple; spinous dorsal elongate or filamentous in both sexes; genital papilla nonfimbriate; in life ventral band jet black, and with purple upper half of body and top of head (Ref. 87726); characterized further by having ctenoid scales, none on head, nape and pectoral fin base; separated pelvic fins, thin membrane joins bases; depth of body 4.1-5.6 in SL (Ref. 90102). | |||
Biology: | Forms groups among branches of Acopora coral, inhabits sheltered reefs in 8-30 m (Ref 90102). | |||
IUCN Red List Status: | Least Concern (LC); Date assessed: 29 June 2018 Ref. (130435) | |||
Threat to humans: | harmless |