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Gerald
R. Allen: Description of Two New Gobies (Eviota, Gobiidae) from Indonesian
Seas, pp. 125-130
Two new
species of Gobiidae are described from Indonesia. Eviota raja is described from 16 specimens,
12.7-23.8 mm SL, collected at the Raja Ampat Islands, Irian Jaya Province. It
is closely related to E. bifasciata, a sympatric species that is distributed
across the Indo-Australia Archipelago. The two species differ in colour
pattern, as well as counts for segmented rays in the second dorsal fin and
lateral scale rows (usually 9 and 22 respectively for E. bifasciata and 10 and 25 in E. raja). The
second new species, Eviota mikiae, is described on the basis of 9 specimens, 12.6-19.1 mm SL,
collected at Pulau Weh, northern Sumatra. It is similar in appearance to E.
pellucida of the
western Pacific, but differs in having more segmented rays in the second dorsal
fin, (9 versus a usual count of 8), more branches on the fourth pelvic fin ray
(modally 8 versus 5), ad fewer segments between branches on the fourth pelvic
fin ay (1 versus 5).
John
E. Randall and Aharon Miroz: Thalassoma lunare x Thalassoma ruepellii, A Hybrid Labrid Fish from the
Red Sea, pp. 131-134
A hybrid
of the endemic Red Sea labrid fish Thalassoma ruepellii (Klunzinger) (identified as T.
klunzingeri
Flower and Steinitz by most recent authors) and the wide-ranging Indo-Pacific T.
lunare (Linaeus)
is documented. Colour illustrations of the hybrid, the parent species, and the
young and subadult of T. rueppellii are presented. The hybrid specimen (BPBM
38478, 247 mm SL) is deposited in the Bishop Museum, Honolulu, Hawaii.
Shelley Walker and Francisco J. Neira: Aspects of the reproductive biology and early life history of black bream, Acanthopagrus butcheri (Sparidae), in a brackish lagoon system in southeastern Australia, pp. 135-142
Aspects
of the reproductive biology and early life history of black bream (Acanthopagrus
butcheri) in the
Gippsland Lakes, a large brackish lagoon system in southeastern Australia, are
described. Trends in mean gonadosomatic indices of males and females between
November 1993 and March 1996 indicate that spawning occurred between October
and February, with a peak in October-November when water temperatures were
15-22°C. Larvae (4.6-11.2 mm body length (BL)) were caught in shallow brackish
ponds in November 1996 ad January 1997 and possess the typical sparid
characteristics. Notochord flexion in larvae occurs at 4.6-6.0 mm BL, while
early juveniles settle from about 13 mm BL. Ageing of black bream showed that the
youngest sexually mature male (15.6 cm fork length (FL)) and female (15.9 cm
FL) were 3+ year olds. The ability of black bream to complete their life cycle
within estuarine environments appears to be unique amongst members of the
Sparidae worldwide.
Gerald
R. Allen: Two New Species of Cardinalfishes (Apogonidae) from the Raja Ampat
Islands, Indonesia, pp. 143-149
Two new
species of apogonid fishes are described from the Raja Ampat Islands, off
western New Guinea (Indonesian province of Irian Jaya), based on specimens
collected during a Conservation International Survey in March-April 2001. Apogon
leptofasciatus
is described from three specimens, 48.2-50 mm SL, collected from a depth of 15
m. It is most similar to A. nigrocinctus Smith and Radcliffe (northern Australia
to the Philippines) and A. jenkinsi Evermann and Seale (Australia to Japan),
both of which possess similar black markings on the dorsal fins and caudal fin
base. However, adults of these species lack narrow stripes on the upper body,
and A. jenkinsi
also differs in having a black spot on each side of the nape. The new species
further differs from these two species in having fewer developed rakers on the
first branchial arch (18 versus 22-25). Apogon oxygrammus is described on the basis of
three specimens, 30.8-38.7 mm SL, collected from a depth of 46 m. It differs
from all known species in the genus on the basis of colour pattern (overall
whitish with a tapering black mid-lateral stripe that extends onto the caudal
fin) and jaw dentition (enlarged teeth in relatively few rows).
Victor G. Springer and Gerald R. Allen: Ecsenius ops, from Indonesia, and E. tricolor, from Western Philippines and Northwestern Kalimantan, New species of Blenniid Fishes in the Stigmatura Species Group, pp. 151-160
Based on
additional material and numerous colour photographs taken in the field, Ecsenius
melarchus, as
treated by springer (1988), is shown to comprise three species, two of which
are described as new. We hypothesize that six species within Ecsenius (E.
stigmatura, E. melarchus, E. ops n. sp, E. tricolor n. sp., E. midas, and E. lividanalis) form a monophyletic clade, the
Stigmatura species group. We further hypothesize that the Bicolor species group (E. bicolor, E.
namiyei) is the
sister group of the Stigmatura group. The Stigmatura group comprises a trichotomy of two
monospecific branches and the Stigmatura complex, which comprises an unresolved
polytomy of E. melarchus, E. stigmatura, E. ops, and E. tricolor. Aspects of the distribution of
the Stigmatura complex species are discussed with regard to Huxley÷s Line.
Luiz
A. Rocha and Ricardo S. Rosa: Halichoeres brasiliensis (Bloch, 1791), a valid wrasse
species (Teleostei: Labridae) from Brazil, with notes on the Caribbean species Halichoeres
radiatus
(Linnaeus, 1758), pp. 161-166
Halichoeres
brasiliensis
(Bloch, 1791), previously considered to be a junior synonym of H. radiatus (Linnaeus, 1758), is a valid
species. It differs from H. radiatus by having 19-21 instead of 21-23 gill
rakers, lacking four whitish blotches on the dorsum, and having a blue instead
of a yellow margin on the caudal fin. The two species have allopatric
distributions: H. brasiliensis is found on the Brazilian continental shelf and at Trindade
Island, whereas the range of H. radiatus comprises the Caribbean, Gulf of Mexico,
Florida, Bermuda, and the Brazilian oceanic islands of Fernando de Noronha,
Atol das Rocas, and St. Paul÷s Rocks.
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