Ogilbia nigromarginata Møller, Schwarzhans & Nielsen, 2005
Blackmargin brotula
Blackmargin brotula,  Brótula de margen negro,  Darkfinned coralbrotula
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Family:  Dinematichthyidae (Viviparous brotula)
Max. size:  7.7 cm SL (male/unsexed)
Environment:  demersal; marine; depth range 0 - 33 m
Distribution:  Eastern Pacific: Gulf of California.
Diagnosis:  Dorsal soft rays (total): 67-75; Anal soft rays: 50-57; Vertebrae: 41-44. This species is characterized by the following: vertebrae 11-12 + 29-33 = 41-44, dorsal fin rays 67-75, anal fin rays 50-57; outer pseudoclasper is broad, distally much expanded; inner pseudoclasper large, with two elongate branches pointing outwards, penis with abrupt change from thick base to thin tip; opercular spine with single, sharp tip, broad scale patch on cheeks with 6-8 vertical scale rows; otolith compressed, length: height ratio 2.1-2.2; vertical fins with black margins; head profile high (Ref. 57883).
Biology:  Lives in rocky habitats. A 72 mm SL female collected was found to contain eggs 0.5 mm in diameter and a 75 mm female with eggs 0.8 mm in diameter (Ref. 57883).
IUCN Red List Status: Least Concern (LC); Date assessed: 29 April 2008 Ref. (124695)
Threat to humans:  harmless
Country info:  Type locality, San Carlos, Sonora, USNM 375548 (holotype of Ogilbia nigromarginata, 5.2 cm SL, male). Known from the central and northern parts, extending southward to the tip, but not on its Pacific side (Ref. 57883).

Entered by: Capuli, Estelita Emily - 01.03.07

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