• Animal Systematics, Evolution and Diversity
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• v.13 no.2
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• pp.173-192
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• 1997

Three damselfishes, Dascyllus melanurus, Dascyllus trimaculatus and Poamcentrus nagasakiensis were collected in the coastal waters of Cheju Island, Korea, during the period from July 1994 to May 1997. These taxa were a new records to th Korean fish fauna. This study re-describe about family Pomacentridae (6 genera, 13 species) including 3 new recorded species and suggest the taxonomic key of family pomacentridae from Korea.

• Animal Systematics, Evolution and Diversity
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• v.14 no.2
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• pp.67-70
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• 1998

A rate species of Ogcocephalid fish, Malthopsis annulifera Tanaka, was recently collected from coastal waters in East Sea, Korea. This species is redescribed as new recod to Korea.

• Korean Journal of Ichthyology
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• v.27 no.4
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• pp.263-274
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• 2015

Change in morphological and biological characteristics of Japanese eel, Anguilla japonica, by maturation were determined by examination of 182 individuals collected in Korea waters from September to December 2014. Eels were classified into four stages based on the silvering index. The proportion of silver eels collected from streams and estuaries (34.6%) was higher than that from the freshwater reservoirs (3.8%). The sex ratio between female and male was 1:0.11 (n=182). Mean total length and weight were positively related to the silvering process. The ratios of head and pectoral lengths to total length and the ratio of horizontal and vertical orbital diameters to head length were significantly different between the maturation stages. However the ratio of pre-dorsal and pre-anal lengths to total length were not significantly different between the maturation stages. The gonado-somatic index was the single character that could identify the whole four stages among the indices examined: gonado-somatic index (GSI), condition factor (K), gut index (GI) and eye index (EI) but hepato-somatic index (HSI). One pseudo-silver eel collected. looked like a late silver eel in the S2 stage according to its external body color and morphology, but most of other characteristics suggested that it might be in Y1 (yellow eel) or Y2 stage (late yellow eel).

• Korean Journal of Ichthyology
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• v.10 no.2
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• pp.216-230
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• 1998

The taxonomic review of the family Platycephalidae from Korea was made based on the morphological characteristics of specimens collected in the Korean coasts from December 1987 to April 1998. The family Platycephalidae from Korea was classified into 10 species belonging to 7 genera: Onigocia macrolepis, O. spinosa, Rogadius asper, Suggrundus meerdervoorti, lnegocia japonica, I. guttata, Cociella crocodila, Ratabulus megacephalus, Platycephalus indicus and Platycephalus sp. Of them, Onigocia macrolepis was recorded for the first time in Korea and Platycephalus sp. was demanded to recheck its taxonomic position comparing with other Asian specimens in future. A new key to the genera and species of the family Platycephalidae from Korea was reported, with description of their morphological characteristics and distribution.

• The Korean Journal of Zoology
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• v.33 no.2
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• pp.241-245
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• 1990

In order to resolve the taxonomic contusion of Acheilognathus limbata from Korea, 17 morphological characters, egg form and cleavage part of A. limbata from Japan and Korea were ompared. These two groups are overlapping each other in morphometric characters mostly, but two characters of snout length and interarbital width percent in head length are distinguished between them. Moreover the Korean and the Japanese specimens are significantly different from each other based on the egg form and, cleavage part of egg. These results indicate that A. limbata from Korea and from Japan are homonyms. So we consider that the target specimens from Korea should be treated Acheifognathus sp. rather than Acheilognathus limbata until further informations are available.

• Korean Journal of Environmental Biology
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• v.39 no.1
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• pp.55-67
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• 2021

A 210-day experiment was conducted to examine the effects of starvation on survival, external morphometric traits, and sectioned morphometric traits in Far Eastern catfish(Silurus asotus). The survival rate decreased to 92.2±0.47% in the fed group and to 74.4±2.59% in the starved group. Eight dimensions of Ls, DALPO/Ls, DADOP/Ls, ED/Ls, CH/Ls, BDAA/Ls, BDMA/Ls, and BWAA/Ls showed significant differences (p<0.05), and 16 other dimensions of DALAD/Ls, DPDPL/Ls, HPLAA/Ls, HALAV/Ls, HALOP/Ls, DAUPO/Ls, DADAV/Ls, DADAA/Ls, Max BL/Ls, Man BL/Ls, LD/Ls, HWOP/Ls, DAUF/HL, DAUS/HL, IW/HL, and DAUE/HL were not significantly different among the initial, fed, and starved groups (p>0.05). The fed group showed higher total height (THX), wider width (WX), and larger area (AX) than those of the starved group in each body section. This research provides information on the morphometric traits and body sections of starved Far Eastern catfish. These results can be used as a basic guide to indicate nutritional status and assist in aquaculture methods for Far Eastern catfish. Moreover, the methods used in this study were considered helpful because the survey analysis method can be used to investigate information on the nutritional status of other fish species.

• Korean Journal of Ichthyology
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• v.19 no.2
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• pp.128-131
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• 2007

Head length, snout length, postorbital length, and eye diameter were measured in 209 brown croaker, Miichthys miiuy, ranging from 3.0 to 650.0 mm in total length (TL). All of the four head dimensions were regressed against the TL respectively and were increased linearly with the relative size of the head. The determination coefficients ($r^2$) ranged from 0.9823 to 0.9916, and all analysis of variance values were significant (P<0.0001). Those results suggest that these head dimensions may be useful indicators for detecting morphological deformities or for individual and population growth histories to aid in the successful rearing of brown croaker fingerlings.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.30 no.2
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• pp.297-304
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• 1997

Morphological and Benetic comparision were studied for the arkshell populations of Korea and China. The shell was collected from commercial arkshell bed in Jinhae Bay, Korea and from an hatchery in Young Seong, China. Shell Parameters, number of radial ribs and random amplified polymorphic DNA (RAPD) band were measured. The two populations had morphological and genetic differences. There was significant morphological difference $(P\leq0.05)$ in the ratio of the longest radial rib to the shell length. Posterior parts of the Chinese arkshell were more elongated than those of the Korean arkshell. Number of radial ribs were $36\~41$ for the Korean arkshell and $39\~43$ for the Chinese arkshell. RAPD markers generated tty each of 19 primers were $2\~6$ bands. Genetic diversity between the two Populations was clear since the genetic similarity was very low, not exceeding 0.29. The genetic similarity among the Korean arkshells $(0.58\~0.40)$ was higher than that of the Chinese arkshells $(0.48\~0.32)$.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.42 no.6
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• pp.600-603
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• 2009

Genetic and phenotypic parameter estimates for measurement traits were obtained from pacific oyster Crassostrea gigas at nine months old. For the growth-related traits among nine months old pacific oyster, heritabilities of shell length, shell height, shell width, total weight, body weight and shell weight were estimated as 0.4855, 0.5248, 0.0884, 0.7236, 0.7726 and 0.6957, respectively. Genetic correlations among the growth-related traits of pacific oyster at nines month old, shell length, shell height, shell width, total weight, body weight, shell weight were showing highly positive correlations. Breeding value on growth-related traits of pacific oyster at nine months old were estimated as shell length -7.044-11.870, shell height -11.380-18.370, shell width -1.234-2.831, total weight -8.339-17.140, body weight -1.813-3.507 and shell weight -4.422-8.837. The results show that there is quite substantial additive genetic variance for measurement traits in pacific oyster that can be exploited through selective breeding.

• Korean Journal of Ichthyology
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• v.8 no.1
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• pp.22-48
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• 1996

The toxonomic revision of the suborder Labroidei was made based on the specimens collected from the coasts of Korean Peninsula from 1988 to 1996. The fishes of this suborder in Korea are composed 32 species belonging to 22 genera and five families of Pomacentridae, Cichlidae, Embiotocidae, Labridae, and Scaridae. And the keys to species, genera and families are provided with redescriptions and collection data. Among them the specimens of 21 species were collected and Ditrema viridis of family Embiotocidae was the first record from the coast of Wando-gun, Chollanam-do, Korea. Most species of the suborder Labroidei of Korea were mainly distributed in the coast of Cheju Island and South coast influenced by the warm Kuroshio Current.