Ctenogobius smaragdus (Valenciennes) 1837

Emerald goby

photo by J. Van Tassell
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Head Pores - Cephalic canals paired between the eyes from pore D anteriorly; Pores present A',B,C(2), D,F,H'; preopercle with pores ________

Scales - Scales in lateral series 39-46

Fins - D1 - VI, filimentous in males, 3rd D1 spine reaching to 5th ray of D2; D2 - 11; anal - 12;

Head -

Papillae -

Color - Background color light tan. Sides with five black blotches at midline, the first blotch covered by the pectoral fin, the second under the 3rd ray of D2, the third blotch under the 7th and 8th ray, and the fifth blotch at the base of the caudal fin. Back crossed by seven black bars, the first at the front of D1, 2nd at D1(6), 3rd in front of D2, 4th at D2 ray 4-5, 5th at D2 ray 7-8, 6th at last two rays of D2, 7th across caudal peduncle. These bars breakup ventrally as they meet the lateral black blotches. Sides of head with several large, black-encircled light spots, often extending onto the pectoral fin base and the sides of the body. Pectoral fin with 6-8 vertical bars. First dorsal fin with four horizontal stripes of black pigment, the second dorsal fin with 4 horizontal stripes of black pigment that curve down to meet the back on the posterior part of the fin. (Greenfield+ 1997)

Distribution - South Carolina to Florida, Cuba, absent from rest of Antilles, Gulf of Mexico and Caribbean coast to Brazil

Habitat - Stagnant, weedy backwaters and mangrove areas

Notes -

photos by Spike Millevolte Naples, Florida