Microgobius curtus Ginsburg 1939
photo by J. Van Tassell
Papillae Drawing

IDENTIFICATION

Head Pores - Oculoscapular canal with pores B",D,F,G,H' and preopercle canal with two pores.

Scales - lateral scale rows about 62-78; scales mostly cycloid

Fins - D1 - VII, both sexes with spines 2-5 produced into filaments the longest reaching half of soft dorsal fin (Birdsong 81); D2 - 16(15-17); pectoral 21(20-22); anal - 15(16-17)

Head - fleshy nuchal crest absent to poorly developed in both sexes

Papillae -

Color - Males: freshly preserved: body yellowish-green with bluish cast to belly; sides marked anteriorly with 10-15 small yellowish spots; a faint dusky blotch on side below spimous dorsal fin and five dusky dashes on body along dorsal fin base; cheeks with 4 longitudinal stripes alternately yellow and iridescent blue; opercle with several iridescent blue spots and several yellow spots; nape with several yellow spots, spinous dorsal fin dusky with 2 basal longitudinal rows of yellow spots and three dark dashes along distal margin (sometimes obscure); soft dorsal fin with 4 rows of orange spots on interspinous membranes and 4 dark dashes along distal margin; anal fin dusky yellow proximally, pale at margin; caudal fin dusky with yellowish cast dorsally and orange cast ventrally; caudal fin with 3 dark dashes along dorsal margin and pale dorsal and ventral submarginal stripes; pectoral fins pale; pectoral base with large yellow spot medially and dusky blotch dorsally; pelvic fins dusky yellow. (Birdsong 81)

Females fresh preserved: body yellowish-green above, white ventrally above anal fin, the two areas being sharply defined by a narrow line originating at anal fin origin and running dorsoposteriad to lateral midline, there continuing above the midline to caudal base and becoming faint posteriorly; belly bluish; anteriorly sides of body crossed by three narrow, pale bars originating under spinous dorsal fin; sides of body with 5-6 yellow spots under appressed pectoral fin and 5 dusky dashes on body along base of dorsal fins; cheeks with 4 longitudinal stripes alternatly yellow and iridescent blue; opercle iridescent blue with several yellow spots; spinous dorsal fin dusky with numerous orange spots dorsally and yellowish cast ventrally; pectoral fins pale; pectoral base with yellow spot medially and dusky blotch dorsally; pelvic fins yellowish. (Birdsong 81)

Distribution - Pacific Costa Rica to Peru

Habitat - Muddy mangrove areas

Notes -