Tidewater goby

Eucyclogobius newberryi, the Northern tidewater goby, is a species of goby native to lagoons of streams along the coast of California, United States. . The genus name translates as 'true cycloid goby', referring to the scales, while the species epithet is in honor of J. S. Newberry (1822-1892), an American geologist, physician and explorer, who collected fishes for the species species describer, Charles Frédéric Girard, just not this species. A small fish, only rarely longer than 5 cm (2 in), the northern tidewater goby is elongate with a blunt tail. Color is a mottled gray, brown, or olive; living fish are translucent or mostly transparent. Tidewater gobies, like many fish, exhibit countershading and tend to be mottled slightly darker on the dorsal side. The upper part of the first dorsal fin is clear or cream-colored, while the second dorsal is longer than the first, and close in size to the anal fin. The large mouth extends back to or past the posterior edge of the eye, and is angled upwards. The eyes are spaced far apart. Unusually among gobies, the scales are cycloid instead of ctenoid; they are always absent from the head, and often from the underside too.