Elacatinus serranilla Randall & Lobel 2009

Dorsal rays VII + I,10; anal rays I,10; pectoral rays 17–18, usually 18; no scales; body andfins covered with thick adherent mucus; mouth subterminal; tongue truncate; no rostral frenum; color in alcohol: narrow dark brown stripe extending posteriorly from upper part of eye, broadening laterally on body, and ending diffusely at midposterior end of caudal fin; a narrow dark brown stripe from base of upper lip,passing just above eye, then dorsally on body below base of dorsal and fins, and continuing into dorsal part of caudal fin; narrow zone between dark stripes pale gray-brown; body below lateral dark stripe pale graybrown; fins translucent yellowish; in life, dark stripes black, narrow pale stripe between stripes bright bluish white, and body below lateral black stripe pale bluish gray; a narrow mid-dorsal bluish white band on snout from behind upper lip to front of interorbital space (Ref. 81169).

Dorsal spines (total): 8; Dorsal soft rays (total): 10; Analspines: 1; Analsoft rays: 10

Judging from the gut contents of other sponge-dwelling species of the genus, he surmised that a large portion of the diet of this species will prove to be the parasitic sponge polychaete Haplosyolis spongicola (Ref. 81169).

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Elacatinus serranilla Elacatinus generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Gobiidae familian.