ISSN 1063-0740, Russian Journal of Marine Biology, 2016, Vol. 42, No. 3, pp. 279–280. © Pleiades Publishing, Ltd., 2016.
Original Russian Text © V.V. Zemnukhov, E.I. Barabanshchikov, S.V. Turanov, 2016, published in Biologiya Morya.
Synodontidae (Pisces: Aulopiformes), a New Family
for Fauna of Russia
V. V. Zemnukhov
, E. I. Barabanshchikov
, and S. V. Turanov
Zhirmunsky Institute of Marine Biology, Far Eastern Branch, Russian Academy of Sciences,
ul. Pal’chevskogo 17, Vladivostok, 690041 Russia
Pacific Research Fishery Center, ul. Shevchenko 4, Vladivostok, 690900 Russia
Received November 21, 2015
Abstract—The finding of the shortfin lizardfish Saurida microlepis Wu et Wang, 1931 in Peter the Great Bay
of the Sea of Japan makes a contribution to the ichthyofauna of the Russian waters with a new family Syno-
Keywords: Synodontidae, lizardfish, Saurida microlepis
The family Synodontidae includes three genera
and approximately 70 species [2, 3] that inhabit tropi-
cal and subtropical waters of the World Ocean. To
date, members of this family have not yet been
reported for Russian waters. However, in 2013 one
specimen of the lizardfish was caught in Peter the
Great Bay of the Sea of Japan. A description of this
find is presented in this work.
MATERIALS AND METHODS
Measurements were performed in accordance with
the accepted methods for this fish group [5, 7]. The
number of vertebrae was counted in a roentgenogram.
The text conventions used here are: SL, standard
length, mm; c, the head length, mm; D, A, P, V, the
number of rays in the dorsal, anal, pectoral and ventral
fins, respectively; ll, the number of scales in the lateral
line; vert., the number of vertebrae.
28685, SL of 383 mm (see fig-
ure), Sea of Japan, Peter the Great Bay, Ussuriiskii
Bay, Emar Bight, 250 m of Engelm Cape, depth of
4 m, substrate: sand, August 2013, collector
RESULTS AND DISCUSSION
Description. D 12, A 11, P 15, V 10, ll 69, vert. 64.
The body cylindrical, covered with large tightly seated
overlapping scales, starting at the head and reaching to
and spreading onto the base of the tail fin. The scales
of the lateral line are no larger than the others; they
form the keel on the caudal peduncle.
Predorsal scales number 25. Mouth big. The length
of the upper jaw is 62%, the snout length is 27% of c.
Eyes not telescopic. The dorsal fin is relatively small,
its height is 68%, and the length of the base is 56% of
the c. There is an adipose fin.
Pectoral fin is dark, two times the length of the
head, does not reach the vertical start of ventral fin.
The body and fins without pronounced spots. The
ventral and anal fins are bright. The length of the inner
beam of the ventral fin is 65% of c, the external beam
is slightly shorter and equals 48% of с.
Comparative remarks. Attribution of the specimen
to the family Synodontidae is reliably diagnosed by a
combination of the following features: the fat and dor-
sal fins are present; the ventral fin without spines has
an abdominal position; all fins are small: according to
the height and length of the base they are no longer
than the head; the beginning of the dorsal fin is
located in the anterior half of the body; mouth large,
terminal, reaching far beyond the vertical of the rear
edge of the eye; lateral line scales do not differ from
other scales in size; photophores absent; eyes not tele-
scopic [1, 4, 6]. The genus Saurida differs from other
genera of the family by the presence of scales on the
entire body and by the structure of the ventral fin,
whose external and internal rays have approximately
the same length.
According to the combination of all the investi-
gated diagnostic features of the taxa of the family Syn-
odontidae, the studied specimen belongs to the species
Saurida microlepis. This species is clearly distinguish-
Museum of the Zhirmunsky Institute of Marine Biology, Far
Eastern Branch, Russian Academy of Sciences.