Callogobius swifti, a new goby (Teleostei: Gobiidae) from Papua New Guinea
Gerald R. Allen, Mark V. Erdmann & William M. Brooks
A new species of gobiid fish, Callogobius swifti, n. sp. is described from five specimens 15.5-23.4 mm SL, collected from coastal reef slopes in 40-65 m depth at Milne Bay Province, Papua New Guinea. Diagnostic features include: segmented dorsal-fin rays 9; segmented anal-fin rays 8; lateral scales 21 or 22; predorsal scales 7 or 8; cephalic sensory-canal pores reduced, with only posterior nasals (B*), posterior interorbital (D), anterior otics (F), and intertemporals (H*); cephalic sensory papillae rows 20 and 21 separate and 10 transverse mandibular papillae rows; no pelvic frenum and the connecting membrane restricted to the basal half of the fin; and cycloid scales anteriorly, becoming ctenoid posteriorly below the level of the base of the second or third segmented dorsal-fin ray. The live color pattern is mottled brown with gray lateral stripes corresponding to lateral-scale rows, the dorsal fins and upper edge of caudal fin with orange vermiculations and whitish margins, and a yellow-edged partial ocellus on the basal half of the first dorsal fin. The new species can be distinguished from all congeners by the combination of the cephalic sensory-canal pore pattern, a low lateral-scale count, and the absence of a pelvic frenum.
Allen, G.R., Erdmann, M.V. & Brooks, W.M. (2020) Callogobius swifti, a new goby (Teleostei: Gobiidae) from Papua New Guinea.
Journal of the Ocean Science Foundation, 35, 86-93.
publication date: 29 July