Blenniella periophthalmus

Habitat. The specimen was collected from a tidepool within a rocky intertidal zone, at a depth of approximately 0.2 – 0.3 m.

Sumber: New records of six combtooth blennies in the genera Blenniella, Cirripectes, Istiblennius, and Salarias (Perciformes: Blenniidae) from Taiping Island, South China Sea

Description. Dorsal-fin rays XIII, 20; anal-fin rays II, 21; pectoral-fin rays 14; pelvic-fin rays I, 4; segment caudal-fin rays 6 + 5 (branched 5 + 4); vertebrae 10 + 27; no nuchal cirri; supraorbital cirri 1 (both side); nasal cirri 7 (both side); lateral line tubes 10 (both side). Morphometric data are provided in Table 1. The body is elongate, slightly compressed posteriorly, and deepest at the pectoral-fin base. The dorsal profile from the anterior margin of the eye to the snout is nearly vertical, then gently rises toward the first dorsal-fin origin before gradually descending and slightly arching again posteriorly toward the caudal peduncle. The ventral profile is weakly convex from the tip of the lower jaw to the abdominal region, then nearly straight and parallel to the body axis toward the anus, slightly rising along the anal-fin base, and becoming nearly straight again anterior to the caudal peduncle. The anus is located slightly anterior to mid-body. The head is bluntly rounded and widest at the mid-cheek region. The eye is moderately sized and situated anterodorsally. The nuchal cirri occur in two separated clusters at the middle of the nape. The cephalic sensory pore system is complex. The posterior dorsal-fin rays are separated from the fin base, and the posteriormost fin membrane does not attach to the caudal peduncle. The anal-fin base extends from directly below the 12 th dorsal-fin spine to a point below the posteriormost part of the dorsal-fin base, and the posteriormost anal-fin ray is split from its base. The caudal fin is arcuate. The pectoral-fin origin lies below the first dorsal-fin spine, and the ventralmost pectoral-fin base aligns below the second dorsal-fin spine; the longest ray reaches the abdominal region anterior to the anus, and the posterior margin is rounded. The pelvic-fin origin is positioned anterior to the vertical level of the nuchal cirri, and the fin reaches to a point below the third dorsal-fin spine base. The body exhibits alternating dark-brown and light-brown coloration. Three elongated white spots are present near the dorsal-fin base, and five occur near the anal-fin base. The head, particularly around the eyes, has alternating orange and white stripes, while the ventral snout region bears orange spots; the eyes display alternating orange-red and white stripes. The first and second dorsal fins contain sparse orange spots, with red-tipped distal margins. The anal fin gradually transitions from white basally to semi-translucent distally. The pectoral-fin base bears orange spots, while the remaining portion is semi-translucent white. The pelvic fin is white. The caudal-fin rays are gray, with the lower portion of the fin membrane orange-yellow and the remaining area transparent.