• Korean Journal of Ichthyology
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• v.17 no.2
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• pp.91-97
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• 2005

A taxonomic review of the genus Leiognathus was made based on specimens collected from the coast of Korea from 1997 to 2004. The genus Leiognathus in Korea includes 6 species: Leiognathus elongatus, L. fasciatus, L. lineolatus, L. nuchalis, L. rivulatus, and L. bindus. Leiognathus bindus is reported for the first time in Korea. It is characterized by having bright orange spots between the 2nd and 5th spines of the dorsal fin. Detailed morphological measurements and counts and a key to species of Leiognathus from Korea are provided.

• Korean Journal of Ichthyology
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• v.12 no.1
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• pp.20-24
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• 2000

The blenniid fish, Istiblennius dussumieri (Valenciennes) was reported on the basis of six specimens collected from rocky shores on the Yokonami Peninsula, Kochi Prefecture, southern Japan. This species was characterized by wavy, dusky stripes on its dorsal fin, 14 pectoral fin rays, 38 to 42 vertebrae, branched supraorbital cirrus, finger-like nasal cirrus, seven to ten vertical, dark bands on the body and canines absent on both jaws. Although the occurrence of this species may be due to larval transport by the Kuroshio Current, this is the first record of I. dussumieri from Japan represents a remarkable northern range extension of the species in the western Pacific Ocean.

• Korean Journal of Ichthyology
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• v.20 no.3
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• pp.224-227
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• 2008

A specimen of Aspasma minima (25.4 mm SL) belonging to the family Gobiesocidae was collected from coastal waters near Hamdeok in Jeju Island, Korea. This species is characterized by having 6~9 dorsal fin rays, 5~9 anal fin rays, 20~24 pectoral fin rays, many red spots on head and body when fresh, and posterior end of upper jaw not reaching anterior margin of eye. Our specimen is well matched in its morphological characteristics with previous descriptions of A. minima. Thus, we newly add this species to the Korean fish fauna and propose its new Korean name, "Kkoma-hak-chi".

• Korean Journal of Ichthyology
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• v.30 no.3
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• pp.170-174
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• 2018

A single specimen of Caranx melampygus (113 mm standard length), belonging to the family Carangidae, was firstly collected by a set net from the coastal waters of Jejudo Island, Korea. This species is morphologically similar to C. sexfasciatus except for the posterior end of maxilla not reaching the posterior margin of eye (vs. reaching in C. sexfasciatus) and no black blotch on the upper part of opercle (vs. black blotch). We newly add this species to the Korean fish fauna and propose its new Korean name "Jag-eun-ip-jul-jeon-gaeng-i" for the species because it has relatively smaller upper jaw when compared with C. sexfasciatus.

• Korean Journal of Ichthyology
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• v.10 no.1
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• pp.40-48
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• 1998

Comparative morphology of the genus Branchiostegus has been investigated based on the specimens collected from the adjacent waters of Korea. Branchiostegus japonicus has a distinctive silvery white triangular marking behind eye, while B. albus has nothing. B. albus has about 4 yellow strips along the posterior margin, however, remainder have 5 to 6 longitudinal yellow stripes. In B. auratus, its head length is more than 26% of standard length, but, less than 26% in B. argentatus. This study reveals that B. argentatus is the first record from Korea, and we propose "T$\check{u}$ng-h$\acute{u}$k-ch$\check{o}$m-ok-tu-$\check{o}$" for B. argentatus as a new Korean name.

• Korean Journal of Ichthyology
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• v.7 no.2
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• pp.109-113
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• 1995

A ghost flatheads, Hoplichthys gilberti Jordan et Richardson of the family Hoplichthyidae was studied for the first time in Korea. Five specimens were collected from Pusan in March 28, 1995. The Hoplichthys gilberti is similar to H. langsdorfii in morphological characters, but differs in having 1 rows of spinous processes on scute of both side of body, nearly same size between snout length and eye diameter and 13+3 pectoral fin rays. A new Korean name "Oegasiyangtae" is proposed for the H. gilberti.

• Korean Journal of Ichthyology
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• v.23 no.4
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• pp.310-313
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• 2011

This is the first report of Aprion virescens, belonging to the family Lutjanidae, collected in Korea. The specimen (151.4 mm in standard length) was caught by the gill net in the coastal waters of Jeju Island on 30 October, 2009. This species is characterized by having a deep vertical groove in front of eye, very short pectoral fin almost equal to snout length, and four black spots on dorsal fin. We propose a new Korean name, "Nok-saek-tung-dom-sok" and "Nok-saek-tung-dom" for the genus and species, respectively.

• Animal cells and systems
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• v.2 no.4
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• pp.501-506
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• 1998

In the goby Micropercops swinhonis, the development of its egg's enveloping layers could be divided into 4 stages. In the earliest developmental period, stage I, there is a simple oocyte surrounded by a layer of squamous follicular cells. Stage II corresponds to the yolk vesicle stage of vitellogenesis. Here the initial follicular layer has become bilaminar with the retention of its outer squamous cell layer and the acquisition of an inner cuboidal cell layer just over the zona radiata. The number and size of the cuboidal cells increases throughout this stage. Stage III corresponds to the yolk granule stage of true vitellogenesis. Here the cuboidal cells begin to be replaced by columnar cells. As the oocyte grows, the columnar cells increase in size. The columnar cells produce cytoplasmic neutral mucins and by the end of this stage their cytoplasm has been filled with this mucin. In stage IV a single layer of squamous cells still remained as the outer follicular layer of the oocyte. The secretory activity of the inner follicular layers' columnar cells has ceased and they had lost their cell wall integrity and ended as a series of bullet-shaped, neutral mucin deposits.

• Development and Reproduction
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• v.5 no.2
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• pp.145-150
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• 2001

The testis of Neoditrema ransonneti is testicular tubule type, each testicular tubule consists of numerous testicular cysts which contain numerous germ cells showing the same developmental stage. During spermatogenesis, well developed rough endoplasmic reticula and the Golgi complex are observed in the cyst cell. Secretory activity of cyst cell was the highest in the late spermiogenesis. Sperm binding materials of spermatozeugmata are secreted by testicular cyst cell. One spermatozeugmata is produced by a testicular cyst during spermatogenesis. The capsular structure was not found in the spermatozeugmata discharged from male. According to observations under transmission electron microscopy approximately 1,500 to 1,700 of sperm tails were observed in the cross sectioned spermatozeugmata.

• Korean Journal of Ichthyology
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• v.10 no.2
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• pp.164-167
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• 1998

Three specimens (148.8~227.1mm standard length) of the spotted butterfish, Scatophagus argus (Linnaeus), of the family Scatophagidae were collected for the first time from coastal waters of Puan, Chollabuk-do, Korea from October 1995 to September 1996. S. argus was characterized by having numerous round or oval black spots on body surface, 15~16 gill rakers, the united branchiostegal membranes and 4 anal fin spines.