aqua international journal 23(3)
Volume 23, Issue 3 – 24 July 2017
Volume 23, Issue 3 – 24 July 2017
William D. Anderson, Jr., Carole C. Baldwin, Alfredo Carvalho-Filho, and Teodoro Vaske Júnior: Redescription of the Jeweled Gemfish, Anthias asperilinguis (Serranidae: Anthiadinae), with comment on its ontogeny, phylogeny, and ecology, pp. 73-95
Anthias asperilinguis was described in 1859 from a single specimen collected from an unspecified locality off the Atlantic coast of South America and subsequently reported from the coasts of Venezuela, the Guianas, and northeastern Brazil. More recently, examination of specimens obtained from St. Paul’s Rocks (in the central equatorial Atlantic well offshore from the Brazilian mainland), from off the Brazilian mainland, and from the Caribbean Sea off Dominica, Bonaire, and Curaçao has provided much additional information on this species. As a result of manned submersible diving in the Caribbean, we present ecological information on and the first in situ photograph of this species. We redescribe A. asperilinguis, including ontogenetic changes in color pattern, and offer comments on Odontanthias cauoh and O. hensleyi (the latter herein reassigned to Anthias), a species with coloration resembling that of A. asperilinguis.
Stefano Valdesalici and Dalton Tavares Bressane Nielsen: Laimosemion gili (Teleostei: Cyprinodontiformes: Cynolebiidae), a new miniature species from the Rio Negro basin, Brazil, pp. 97-102
Laimosemion gili is described from the Rio Preto drainage, Rio Negro basin, Amazonas state, Brazil. The new species was found in a small creek called Garukana, within a tropical rainforest in the vicinity of Campinas do Rio Preto. This miniature species is considered to be a member of the subgenus Owiyeye, which is diagnosed by a unique frontal squamation. Laimosemion gili can be distinguished from all other species of the genus by the unique colour pattern, having a metallic blue stripe starting midbody which reaches the origin of the caudal fin. The new species is apparently related to L. romeri, sharing with this latter species a broad black stripe on flanks in males, but is easily distinguished by some other morphological characters.
Gerald R. Allen: Description of a new mud-dwelling goby (Gobiidae: Acentrogobius) from Milne Bay Province, Papua New Guinea, pp. 103-111
A new species belonging to the gobiid genus Acentrogobius is described from mud-bottom habitat in the vicinity of Alotau, Milne Bay Province, Papua New Guinea. Acentrogobius quinquemaculatus is described on the basis of 41 specimens, 13.1-33.4 mm SL. Diagnostic features include a usual combination of 9 soft dorsal and anal rays, 16-18 pectoral rays, 27-29 longitudinal scales, 8 transverse scales, 11-13 predorsal scales, and 2-3 rows of cycloid scales on the upper opercle. The new taxon is similar to A. caninus, which differs in having a slightly lower longitudinal scale count (25-26) and more predorsal scales (17-20). The two species also exhibit similar colour patterns, including a mid-lateral row of large dark marks on the middle of the side, but, A. caninus differs in having a large green spot immediately above and behind the upper rear corner of the opercle. Additionally, A. caninus reaches a much larger size, to at least 100 mm SL compared to about 33 mm SL for A. quinquemaculatus.