Amur Goby

This species is distinguished from its congeners by the following combination of characters: D1 I,8; pectoral-fin rays 18-19; predorsal scales 8-12; longitudinal scales 29-31; vertebrae 11+15 = 26; predorsal squamation composed of large ctenoid scales, reaching anteriorly to near posteriormargin of the eye; short transverse rows of sensory papillae 5-6 below eye; several short transverserows of sensory papillae (a part of row c) between 2 longitudinal rows of sensory papillae on cheek; head with a dark brownish gray reticulation or reddish oblique lines except for its ventral surface; upper end of pectoral-fin base with a black spot, as large as pupil; midlateral body with a longitudinal series of alternating large and small black blotches; 2-4 irregular longitudinal rows of small skyblue spots on midlateral body when alive (Ref. 104791).

Dorsal spines (total): 7; Dorsal soft rays (total): 8; Analspines: 1; Analsoft rays: 8; Vertebrae: 26

The Amur goby (Rhinogobius similis) is a species of fresh water goby native to Japan and China, and widely introduced in several central Asian countries, where it has been reported as negatively impacted the local ecology. This species can reach 10 cm (3.9 in) in total length.