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Four New Cardinalfishes (Perciformes: Apogonidae) from the Marquesas Islands

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Title:Four New Cardinalfishes (Perciformes: Apogonidae) from the Marquesas Islands
Authors:Randall, John E.
Date Issued:Jan 2001
Publisher:University of Hawai’i Press
Citation:Randall JE. 2001. Four new cardinalfishes (Perciformes: Apogonidae) from the Marquesas Islands. Pac Sci 55(1): 47-64.
Abstract:Four species of apogonid fishes are described as new from the Marquesas
Islands. Apogon lativittatus, similar to A. semiornatus, differs in having 13 instead of 12 pectoral rays, 4.5-5.5 scales above the lateral line, 19-23 circumpeduncular
scales, a straighter dorsal profile of the head, deeper body on the
average, opaque red color as an adult with the same midlateral blackish stripe
posteriorly on the body and caudal fin, but the oblique dark band on head reduced,
and in larger size (to 58.4mm SL); the type specimens include one from
the Line Islands (A. semiornatus remains unknown from islands of Oceania). Apogon relativus,
with five dark stripes and pink fins, is similar to A. angustatus, differing in having narrower stripes, a larger and vertically elongate black spot at
midbase of caudal fin in adults, and a broader interorbital space (bony width 4.05-4.8
in head, compared with 5.0-5.95 for A. angustatus). Apogon sinus, collected
in very shallow water at the head of deep bays, is uniquely colored with
seven narrow dark stripes on the body, but none on the lower third of body
anterior to the caudal peduncle; it is most similar to the wide-ranging allopatric A. taeniophorus,
from which it differs in a deeper body (2.6-2.9 in SL, compared
with 2.8-3.2), broader interorbital space (4.2-4.45 in head, compared with 4.5-5.35), and in having 16-17 instead of 17-19 gill rakers. Pseudamiops phasma is
described from two specimens. Like the three other species of the genus, it is
elongate and compressed, with deciduous cycloid scales, no lateral line, ventral
spine posteriorly on the maxilla, and largely transparent body; it differs variously
from the others, but from all in having 19 compared with 14-18 pectoral rays.
Appears in Collections: Pacific Science Volume 55, Number 1, 2001

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