• Korean Journal of Ichthyology
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• v.10 no.1
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• pp.87-97
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• 1998

The freshwater fish fauna and distribution were investigated in Kojedo from 1982 to 1997. The collected fishes were classified into twenty four species of ten families. Dominant species was Zacco temmincki (relative abundance: 18.1%) and subdominant species was Rhinogobius brunneus (16.4%). Also Iksookimia longicorpus (12.3%), Oryzias latipes (7.5%), Chaenogobius urotaenia (7.5%) and Carassius auratus (6.9%) were numerous. The endemic species of Korea were six species (25.0%) and endangered species were C. splendidus, S. microdorsalis and C. kawamebari. In this study, species diversity index was high at Yoncho stream, dominance index at Aju and Oaepo stream and evenness index at Oaepo stream in community structure. There was a tendency of fish distribution in Kojedo that more longer the stream and more larger the water volume were, there were more species and more individual numbers. It was considered that the dominance of upper and middle reach dwelling fishes resulted in the dominance of Aa type stream mainly. Liobagrus mediadiposalis and L. mediadiposalis ssp. 1 showed different distribution pattern in Kojedo : that is, the former inhabited in east-northern part but the latter in south-western part separately. And the importance of this distribution pattern was discussed in relation to paleogeography.

• Korean Journal of Ichthyology
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• v.4 no.1
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• pp.80-86
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• 1992

The ichthyofauna at the Dongchang Stream(a second tributary of the Naktong River) was surveyed from autumn to winter 1991. The fishes collected were 21 species, 18 genera belong to 7 families, and 9 species of them were found to be endemic species to Korea ; Squalidus gracilis majimae, Coreoleuciscus splendidus, Microphysogobio yaluensis, Cobitis longicorpus, Cobitis rotundicaudata, Niwaella multifasciata, Liobagrus mediadiposalis, Coreoperca herzi and Odontobutis platycephala. The dominat species were Zacco temmincki(37.3%)and Odontobutis platycephala(16.9%). and rare species were Pseudorasbora parva, Hemibarbus longirostris, Acheilognathus limbatus, Microphysogobio yaluensis, Cobitis rotundicaudata, Misgurnus mizolepis and Anguilla japonica. The indices of species diversity, eveness and dominant were 0.934, 0.707 and 0.293, respectively.

• The Korean Journal of Zoology
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• v.38 no.2
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• pp.212-219
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• 1995

Through the histolosical observation of ovary in the nine species of the genus Cobitis, we found that specific adhesive membranes were attached to the outer zone radials during the vitellosenesis. These adhesive membranes could be classified into four forms as follows: 1) granular form of Colitis lutheri, C. striate, and C. sinensis, 2) villous form of C. longicorpus, C. konensis koreensis, C. k. pumilus, and C. granoei, 3) saw-like form of C. rotundicaudata, and 4) filamentous form of C. chou. The various forms of adhesive membrane of egg in the cobitid fishes are showed a species specificitv with reference to their habitats and spawning property.

• Environmental Engineering Research
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• v.24 no.4
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• pp.638-645
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• 2019

This research was an evaluation of the fish fauna and the habitat for Brachymystax lenok tsinlingensis (B. lenok tsinlingensis) for 11 stations at the Bonghwa-gun sanctuary. The predominant species in this research area was Zacco koreanus. B. lenok tsinlingensis, which has been designated as an endangered freshwater fish in Korea, was found in the Bonghwa sanctuary zone, except at stations 5 and 6. The B. lenok individuals were shorter in length than 400 mm. In total, 13 endemic species were found, including Coreoleuciscus splendidus and Iksookimia longicorpus. Specimens of Koreocobitis naktongensis, a first grade endangered species, were also collected. The benthic macroinvertebrates consisted of four divisions, four classes, seven orders, 30 families, 60 species, and 10,344 individuals and were distributed among the orders Ephemeroptera (55.9%), Diptera (18.2%), Trichoptera (12.4%), Plecoptera (2.1%), and Odonata (0.3%).

• The Korean Journal of Zoology
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• v.34 no.4
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• pp.585-593
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• 1991

한국 특산종 C. longicolpus의 지리적 변이를 조사하고자 discriminant function 분석에 의한 형태적 변이 그리고 전기영동법에 의한 유전적 변이를 전국적으로 조사하였다. 11개 집단의 discriminant function분석결과 11개 집단은 형태적으로 뚜렷한 차이 없이 유사하였다. 13개 집단의 유전적 변이를 조사한 결과는 13개 집단 평균 A = 1.37, P = 29.96%, HD = 0.076 및 HG = 0.083으로 일반적인 담수어류의 종내 집단 간 평균 유전적 변이정도보다 다소 높게 나타났다. 평균 유전적 근연치는 5 : 0.88으로 타 어종의 일반적인 집단 및 유전적 근연정도와 유사하였다.

• Korean Journal of Environment and Ecology
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• v.10 no.1
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• pp.140-150
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• 1996

The freshwater fish fauna of the Chuwangsan National Park as censused during June 1994 to December 1994 at 11 sampling sites to establish baseline data included 7 Korean endemic species and subspecies (Squalidus gracilis majimae, Squalidus multimaculatus, Cobitis longicorpus, Niwaella multifacisciata, Silurus microdorsalis, Liobagrus mediadiposalis and Odontobutks platycephala) belonging to 17 species in 6 families were collected in this region. Carassius auratus, Moroco oxycephalus, Zacco platypus, Wacco temmincdii, Misgurnus anguillicaudatus, Liobagrus mediadiposalis and Odontobutis platycephala were distributed at all of the regions on this sensus. Dominant species of thes region sere Moroco ozycephalus, Zacco temminckii and Odontobutis platyxephala.

• Korean Journal of Environment and Ecology
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• v.11 no.1
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• pp.100-110
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• 1997

To clarify the structure and function of ecosystem and establish the method for the conservation of biodiversity and community analysis at Soksacheon and Gyebangcheon, the authors surveyed the aquatic environment and freshwater fish fauna at 13 stations from July, 1995 to June, 1996. Collected 1,908 individuals were belong to 20 Species, 4 Oredr, 1 Suborder, 6 family, 7 Subfamily. The detail results are as follows. 1. It was confirmed that most of the surveyed stations were mountain valley of river type Aa, Ab. River structures were mixed with pebble, sand, rock and water quality of Soksacheon were pH(7.41), [COND.(0.051), TURB.(10.00), DO(8.66), W.T.(15.4)] and Gyebangcheon were pH(7.44), [COND.(0.097), TURB.(21.59), DO(9.35), W.T.(15.4)]. 2. Among them, 18 species were primary freshwater fishes(99.98%) and 2 species of pheripheral freshwater fishes(0.02%). 12 species(60%) of them were endemic species of Korea and they were Moroco kumgangenesis, Microphysogovio longidorsalis, Cobitis rotundicaudata, Misgurnus anguillicaudatus, Coreoleucisus splendidus, Cobitis longicorpus, Oncorhynchus masou ishikawai, Brachymystax lenok, Hemibarbus longirostris, Silurus microdorsalis, Cobitis koreensis koreensis and Hemibarbus mylodon. 3. Dominant species were Moroco kumgangenesis(46.85%) and Zacco temmincki(27.35%).

• Korean Journal of Ichthyology
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• v.7 no.2
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• pp.135-139
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• 1995

The ichthyofauna was investigated at the thirteen sites in the Tamjin River from August 1994 to February 1995. The collected fishes were classified into thirty-nine species belonging to 29 genera and 10 families. Among these 12 species were classified as endemic species or subspecies in Korea. Major species in this river system appeared to be Zacco temminchi, Acanthorhodeus gracilis, Zacco platypus, Rhodeus uyekii, Puntungia herzi and Squalidus gracilis majimae. Odontobutis obscura interrupta was collected for the first time in this area.

• The Korean Journal of Zoology
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• v.39 no.4
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• pp.419-425
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• 1996

The five spedes of genus Iksookimia from Korea were investigated by electron microscopes to clarify the adhesive membranes on zona radiata. In the late vitellogenic stage the adhesive membranes could be classified into three form as follows: 1) villous form of Iksookimia koreensis, I pumila, and I. hugowolfeldi, 2) cotton-shaped form of I. longicorpus, and 3) vine-shaped form of I. choii. And although I. koreensis, I pumila, and I. hugowolfeldi possessed the same villous form, It was evident that fine structure of the zona radiata varied according to spedes. The adhesive membranes and fine structures of zona radiata in Iksookimla showed a species specificity related to closely their habitats and spawning properties.

• The Korean Journal of Ecology
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• v.12 no.1
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• pp.51-65
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• 1989

Some aspects of limno-biology of the five dammed lakes such as Tamyang, Changsong, Kwangju, Naju, and Youngsan Lake along the Yongsan River were investigated from June 1986 to July 1988 for the comparison on the lentic ecosystems in relation to the fish fauna. Sixty four fish species representing 48 genera and 21 families of fishes were collected in these dammed areas, which included 29 species of the family Cyprinidea and 40 speaies of the primary fresh-water fishes. Among, these, 12 species such as Rhodeus Acheilognothus yamatsutae, A canathorhodeus gracilis, Sarcocheilichthys nigripinis morii, S. variegatus wakiyae, Gnathopogon strigatus, Squalidus gracilis majimae, Microphysogobio yaluensis, Cobitis longicorpus sp, Liobagrus mediadiposalis and Odontobutis platycephala are enddmic to Korea. Leiocassis nitidus and Gasterosteus aculeatus which occur in these water areas take note of the zooge rographic study of Korea. The fish species in each of the dammed lakes is in proportion of the scale of the lakes such as 32 species in Thamyang, 40 species in Changsong, 24 species in Kwangju, 35 species in Jaju, and 52 species in Yongsan Lake. The dominant fish species of the 4 upper dammed lakes of Thamyang, Changsong, Kwangju and Naju Lake are Zacco platypus and Rhodeus uyekii, while those of Youngsan Lake are Hemiculter eigenmanni and Carassius auratus. This difference of fish species of those areas suggests that the upper damed lake differ from the lower dammed lakes in the habitable condition of fishes. The migratory fish species have significantly declined and will continue to decline in both population size and number of species in the dammed lakes in near future as a result of the dam construction barriers in the river estuary. The major migratory fishes of this water area are as follows; Anguilla japonica, Plecoglossus altivelis, Hypomesus olidus, Gasterosteus aculeatus, Konosirus Punctatus, Coilia ectens, Hemirhampus sajori, Mugil cephalus. Acanthogobius flavimanus, and Takifugu ocellatus.