Synopsis of the Indo-Pacific Pipefish Genus Siokunichthys (Syngnathidae), with Description of S. nigrolineatus n. sp.

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1983-01

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University of Hawai'i Press

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Abstract

The urophorine (tail-pouch) pipefish genus Siokunichthys is rediagnosed; diagnoses, descriptions, illustrations, key, and additional information are provided for the five species recognized. The type-species, S. herrei Herald (Red Sea and western Pacific ) and S. southwelli (Duncker), from Sri Lanka and the Philippine Islands, have long slender snouts, but they differ in numbers of trunk ring s (respectively, 12-14 versus 8) and in other meristic and morphological features. Two species, S. bentuviai Clark (Red Sea, Gulf of Aden) and S. nigrolineatu s n.sp. (Moluccas and Philippines) have short snouts but differ in number of total rings (respectively, 61-65 versus 67-69), shape of the snout, and life coloration. The remaining species, S. breviceps Smith (Mozambique and western Pacific), is characterized by its intermediate snout length and by other proportional and meristic features. These marine fishes are small (to ca . 80 mm SL), some occur in surface waters (usually as subadults), and demersal adults are known to depth s of 20 m. Two species (S. bentuviai and S. nigrolineatus) are apparently commensal with corals.

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Dawson CE. 1983. Synopsis of the Indo-Pacific pipefish genus Siokunichthys (syngnathidae), with Description of S. nigrolineatus n. sp. Pac Sci 37(1): 49-63.

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