• Development and Reproduction
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• v.17 no.3
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• pp.187-198
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• 2013

In this study, we measured the morphometric and histological changes in the cyprinid loach, Misgurnus anguillicaudatus, during the early period of growth. Eyes, yolk length, yolk height, and yolk volume of the larva decreased for 16 days post hatching (DPH) (P<0.05). During 60 DPH (P>0.05), the most anterior extension of the head ${\times}$ the posterior end of the supraoccipital, the most anterior extension of the head ${\times}$ the origin of the dorsal fin, the most anterior extension of the head ${\times}$ the origin of the pectoral fin, the posterior end of the supraoccipital ${\times}$ the origin of the pelvic fin, and the origin of the dorsal fin ${\times}$ the ventral origin of the caudal fin gradually decreased, whereas the most anterior extension of the head ${\times}$ the dorsal origin of the caudal fin, the origin of the dorsal fin ${\times}$ the origin of the anal fin, the origin of the dorsal fin ${\times}$ the origin of the pectoral fin, and the insertion of the dorsal fin ${\times}$ the origin of the pelvic fin gradually increased (P<0.05). In the cyprinid loach, the retina is composed of six layers: the epithelial layer, ganglion cell layer, inner nuclear layer, inner plexiform layer, outer limiting membrane, and rod and cone layer (RCL). After hatching, part of the RCL gradually increased in density. The kidney and midgut epithelium were already formed in the cyprinid loach just after hatching and grew gradually in subsequent days.

• Ocean and Polar Research
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• v.26 no.4
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• pp.685-688
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• 2004

The morphology of the post-larva of Liopropoma japonicum of the family serranidae is described from one specimen collected off Jeju Island ($32^{\circ}42'N,\;127^{\circ}45'E$) on May 3, 2001. The body is laterally compressed and caudal peduncle deep at 19.4 mm BL. Anus locates at a vertical through posteriormost(8th) dorsal-fin spine. Dorsal fin rays were VIII, 14; anal fin rays III, 10; pectroal fin rays 16; pelvic fin rays I, 5. A caudal fin is rounded. Length of elongate second and third dorsal-fin spines are 499% and 423% of the body length, respectively. A series of 50 sensory pores on body is elongated to caudal fin. Head spination is well developed. Melanophores are moderately large and dense in the head, and are small and rare in teh neck. Being freshly collected, the body color is yellowish-red and tail is semitransparent. The head is yellowish-red and the brain is dark-red.

• Fisheries and Aquatic Sciences
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• v.18 no.3
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• pp.297-300
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• 2015

This is the first report of Champsodon longipinnis (Champsodontidae) collected from Korea. The specimen (100.9 mm in standard length) was caught by a bottom trawl in the coastal waters off Busan, Korea. This species is characterized by the following morphological traits: body with small denticulate scales except abdomen around pelvic fin base; posterior end of maxilla extending beyond margin of eye; dark pigmentation on most of the first dorsal fin, upper half of the first to the fourth soft ray of the second dorsal fin, and partial upper lobe of caudal fin. We add C. longipinnis to the Korean fish fauna and suggest a new Korean name, "Jeom-ak-eo-chi," for the species.

• Korean Journal of Ichthyology
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• v.29 no.3
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• pp.224-228
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• 2017

Two specimens of Ruvettus pretiosus (227.0 and 238.3 mm in standard length), belonging to the family Gempylidae, was firstly collected by using a gill net from the eastern coastal waters of Jejudo Island, Korea in November 2013. This species is characterized by having the following morphological traits: XV, 17~19+2 dorsal fin rays; II, 15~16+2 anal fin rays; belly keeled between pelvic fin and anus; body covered with cycloid scales, interspaced with rows of sharp bony tubercles. R. pretiosus can be easily distinguished from three Korean Snake mackerels (Thyrsitoides marleyi, Rexea prometheoides and Gempylus serpens) by having belly keeled between pelvic fin and anus, and cycloid scales covered the body and interspaced with rows of sharp bony tubercles. Based on morphological and molecular approaches, the specimens were identified as R. pretiosus. We propose new Korean names, "Gi-reum-chi-sok" and "Gi-reum-chi" for the genus and species, respectively.

• Korean Journal of Environmental Biology
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• v.18 no.4
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• pp.387-394
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• 2000

The morphological characteristics between male and female of three species, Chaenogobius urotaenia, C. sp. MR, C. sp. BW, collected from June 1996 to Aug. 1999, Korea was studied. Of 13 characters to be studied, 12 characters with exception of caudal fin ray length were significantly different among three species and these three species were distinguished each other by the results of the multiple comparison test (REGWQ test). Interspecific differences in female was distinct in body depth, head length, caudal peduncle length, caudal peduncle depth, snout length, pectoral fin ray length; In particular, C. sp. MR was shorter in upper jaw length, anal fin ray length and eye diameter, and to be smaller in head depth and head width than other two species. Chaenogobius urotaenia was longer in pelvic fin ray length. In case of male, there was not characters to distinguish each one among three species; Chaenogobius urotaenia was longer in head length, eye diameter and pelvic fin ray length than other two species, C. sp. MR to be longer in caudal peduncle length, but shorter in snout length and anal fin ray length, and to be lower in head depth. C. sp. BW was higher in body depth and caudal peduncle depth, and to be longer in upper jaw length and pectoral fin ray length. Both of male and female among three species didn't have any difference in caudal fin ray length. [Chaeogobius urotaenia, C. sp. MR, C. sp. BW, morphological characteristics].

• Korean Journal of Ichthyology
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• v.35 no.2
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• pp.121-128
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• 2023

Two specimens of Polymetme elongata (Phosichthyidae; Polymetme) were collected by a bottom trawl from both the southern coastal waters of Jejudo Island in October 2016 (70.65 mm SL) and Yellow Sea, Korea in August 2022 (54.04 mm SL). They are an elongated body with large mouth, 11 dorsal fin rays, 10 pectoral fin rays, 7 pelvic fin rays, 30~32 anal fin rays, 1 adipose fin, 18 gill rakers, 44 vertebrae, 1 preorbital photophore, 1~2 ventrolateral rows of photophores on body, 1 paired photophores in symphysis of lower jaw, 9 branchiostegal rays, 2 rows of 8 phorophores between pelvic fin origin and anal fin origin, and 1 row of 23 photophores thereafter. At the origin of anal fin, the second photophore is more higher than third photophore and the first photophore is most lowest. Our specimens differ from the other species of the same genus by the ratio of the head length to the standard length (1/5) and the gill rakers (18), absolutely. As this species is the first record of the family Phosichthyidae, genus Polymetme, and P. elongata in Korean waters, we suggest their new Korean names, "Gin-ael-tung-i-gwa", "Gin-ael-tung-i-sog", and "Gin-ael-tung-i", respectively.

• Korean Journal of Ichthyology
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• v.27 no.3
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• pp.249-252
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• 2015

This is the first report of Chaetodontoplus melanosoma, belonging to the family Pomacanthidae, collected in Korea. The specimen (123.1 mm in standard length) was caught in the coastal waters of Jejudo Island by a trammel net on 23 February 2010. This species was characterized by the following morphological traits: 26 dorsal fin rays, 16 pectoral fin rays, 6 pelvic fin, 21 anal fin rays, no blue strips on the body, no markings behind the eye, and an egg-shaped faint black spot on the base of the pectoral fin. We suggest a new Korean name "Geom-eun-cheong-jul-dom" for C. melanosoma.

• Korean Journal of Ichthyology
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• v.33 no.3
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• pp.191-195
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• 2021

Ten specimens of Luciogobius parvulus (42.8~49.0 mm SL) were collected from the coast of Wando-gun, Chollanam-do, Korea. This species is characterized by having 10~11 second dorsal fin rays, 11~13 anal fin rays, 11~12 pectoral fin rays, pelvic fin rays and free rays on pectoral fin absent. All specimens were collected from intertidal zone, rocky shore with gravel. It burrowed among moistened sediment composed of pebble. We propose the new Korean name, "Min-mi-kken-mang-dug", for the species.

• Korean Journal of Ichthyology
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• v.28 no.2
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• pp.116-120
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• 2016

A specimen of Cocotropus masudai (41.2 mm in standard length), belonging to the family Aploactinidae, was firstly collected from the eastern coastal waters of Jejudo Island, Korea by using a fish trap in July 2011. This species is characterized by having the following morphological traits: XII, 9 dorsal fin rays; I, 8 anal fin rays; 12 pectoral fin rays; I, 3 pelvic fin rays; five preopecular spines; five sensory pores present on lower jaw and isthmus tip beyond fifth sensory pore. This species is similar to C. izuensis except for the number of preopercular spines (five in C. izuensis vs. four in C. masudai) and the anterior position of the isthmus (well beyond the fifth lower jaw sensory pore vs. the tip mostly reaching to the pore). In Korea, C. masudai can be easily distinguished from the Erisphex pottii in having the dorsal fin with nine soft rays (vs. 10~14 for Erisphex pottii), anal fin with seven soft rays (vs. 10~13) and pelvic fin with three soft rays (vs. two). We propose new Korean names, "Dot-chi-sok" and "Dot-chi" for the genus and species, respectively.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.47 no.5
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• pp.667-670
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• 2014

Six adult fish of Laemonema nana, belonging to the family Moridae, were collected in a bottom trawl in the southern coastal waters of Korea. These specimens were characterized by having 46-52 second dorsal fin rays (vs. 57-67 for Lotella phycis and 68 for Physiculus japonicus), two pelvic fin rays (vs. 9 for L. phycis and 6-7 for P. japonicus), and lateral line descending abruptly below the anterior part of the second dorsal fin.