• Korean Journal of Environment and Ecology
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• v.29 no.5
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• pp.718-728
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• 2015

The fish community and inhabiting status of introduced fish were surveyed at nine stations of Gangeungnamdae stream from September 2013 to May 2014. A total of 36 species of fourteen families were collected from the survey stations and among them, Pungitius sinensis was identified as endangered species. There were nine Korean endemic species (25%) including Coreoleuciscus splendidus. Dominant species were Rhynchocypris steindachneri (St. 1), Zacco koreanus (St. 2, 4, 5, 6), Ladislabia taczanowskii (St. 3)), Zacco platypus (St. 7, 8) and Tribolodon hakonensis (St. 9). Of the 11 introduced species fishes in Gangeungnamdae stream, L. taczanowskii, Pungtungia herzi, Coreoleuciscus splendidus, Squalidus gracilis majimae, Pseudogobio esocinus, Rhynchocypris kumgangensis, Z. platypus, Z. koreanus, Koreocobitis rotundicaudata, Liobagrus andersoni and Coreoperca herzi were released from Han river water zone in Korean. Rapidly expanded population and distribution of introduces fishes were Z. platypus, Z. koreanus, P. herzi and S. gracilis majimae, but L. taczanowskii, C. splendidus, R. kumgangensis were not rapidly expanded population. Settlement but very small population fishes were C. herzi and L. andersoni. When reduced 3% fishes of relative abundance with previous data (1973), R. steindachneri, Orthrias toni, Iksookimia pacifica, Plecoglossus altivelis, P. sinensis and Gymnogobius urotaenia, and R. steindachneri was most reduced from 56.1% to 12.9%.

• Animal Systematics, Evolution and Diversity
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• v.26 no.2
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• pp.105-114
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• 2010

A study of Han River fish assemblage dynamics for 4 years was conducted. From April 2005 to August, 2008, fishes inhabiting two sites of Han River were sampled for identification. For further analysis, 40 individuals of the dominant species were sampled monthly from March 2006 to November 2008. The fish assemblage at site 1 was dominated by Zacco platypus (32.69%), while the subdominant species were Acheilognathus yamatsutae (14.4%), Acanthorhodeus gracilis (9.43%), Squalidus japonicus coreanus (6.84%), and Tridentiger brevispinis (5.18%). The most abundant species at site 2 was Korean Chub (Zacco koreanus) with relative abundance of 62.45% and followed by Pungtungia herzi (10.29%), Coreoperca herzi (8.67%), and Coreoleuciscus splendidus (6.82%) as the subdominant species. At both sites, the endemics populations show an increasing pattern during the whole survey period, while the natives were declining in the last two years.

• The Korean Journal of Zoology
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• v.23 no.1
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• pp.41-48
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• 1980

A new species of Cyprinid fish, Pseudopungtungia tenuicorpus is described, based upon many specimens collected from several tributaries of the Han River situated in the central part of Korea. This species is distributed in the Han River and characterized by the distinctive body proportiionals.

• Korean Journal of Environment and Ecology
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• v.20 no.3
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• pp.331-339
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• 2006

Inhabitant patterns of the legally protected species and the characteristics of fish fauna in the Pyeongchang River, Korea, were studied from April to July 2004 by selecting 6 sites. The number of fish samples in this period were 2,448 in 35 species of 9 families. A total of nineteen endemic species (54.29%) were presented and those were Hemibarbus mylodon and Acheilognathus signifer. The highest frequency was shown in Zacco korean us (34.84%) and Pungtungia herzi (10.25%) and Coreoleuciscus splendidus (6.86%) were the next. In addition, The highest biomass was found in Z. koreanus (5,580.2g) and Coreoperca. herzi (1.241.2g) and C. splendidus (1,207.0g) were the next. When comparing the distribution of the legally protected species in within the Han River system, the highesting distributions were determined in the Pyeongchang and Dong River (6 species). The ratio of individuals in the Pyeongchang River was shown to be higher (10.62%) than that of other lakes and streams. In conclusion, more precise protection and protective plans were needed in order to maintain the lake ecology in good status because the Pyeongchang River is relatively well protected from the anthropogenic disturbance in the legally protected species including the endemic species.

• Parasites, Hosts and Diseases
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• v.56 no.2
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• pp.183-188
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• 2018

The present study was performed to investigate the infection status with Clonorchis sinensis metacercariae (CsMc) in fishes from 2 sites, the middle and lower reaches, of Tamjin-gang (River) in Jeollanam-do, the Republic of Korea. Total 1,132 fishes in 22 species were collected from the middle reaches in Jangheung-gun for 4 years (2014-2017) and 517 fishes in 17 species were also collected from the lower reaches in Gangjin-gun in 2014 and 2017. They were all individually examined with the artificial digestion method in our laboratory. CsMc were detected in 322 (28.5%) out of 1,132 fishes from Jangheung-gun, and in 161 (31.1%) out of 517 fishes from Gangjin-gun, and their densities were 51 and 57 per fish infected each. In the fish species with CsMc, positive rates were 61.5% in Jangheung-gun and 62.7% in Gangjin-gun. A total of 222 Pungtungia herzi were examined and they were all infected with CsMc. The average intensity was 103 CsMc in the index fish, P. herzi (95 in Jangheung-gun and 121 in Gangjin-gun). In P. herzi bimonthly examined in 2017, the intensity was commonly most higher in March in 2 surveyed sites, however the significant seasonal endemicity was not showed. Conclusively, it was confirmed that CsMc is more or less prevalent in fishes from Tamjin-gang and their endemicity is higher in fish from the lower reaches in Gangjin-gun than the middle reaches in Jangheung-gun in Jeollanam-do, Korea.

• Korean Journal of Environment and Ecology
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• v.28 no.4
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• pp.432-441
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• 2014

April, 2005 to October, 2013. The collected species during the survey period were 17 species belonging to 6 families. Dominant species was Zacco koreanus(Relative abundance 59.9%) and subdominant species Pungtungia herzi(8.5%). Korea endemic species were 12, including Coreoleuciscus splendidus. The species of Hemibarbus mylodon was identified as natural monument, and Pseudopungtungia tenuicorpa and Gobiobotia brevibarba were endangered species. Water quality assessment of Gapyeong Stream, had lately maintained the rating of "very good" for nine years, based on the Ministry of the Environment standards notice. It was found that there was a tendency for populations which is Coreoperca herzi carnivorous species decreases, increases omnivorous species Zacco platypus. As a result of community analysis, dominant index was 0.58~0.86, diversity index was 0.94~1.77 and richness index was 0.99~2.39. As a result of using the Rarefaction curve, were analyzed occurrence species expected each year, number of species is estimated from a sample of 151 individuals, up to 12(2005) was at least 5(2007) species. The regression coefficient (b) in relation to length-weight on Z. koreanus population were annual average $3.29{\pm}1.11$, condition factor slope $0.0034{\pm}0.0021$, which maintained good growth condition and stabilized population.

• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.209-209
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• 2011

본 연구는 횡성다목적댐이 준공되면서 유수역이었던 섬강이 정수역의 환경으로 변하면서 나타난 어류의 군집변화에 대하여 알아보고자 시행하였다. 조사 지역인 횡성다목적댐은 강원도 횡성군 갑천면 대관대리에 위치하고 있으며, 높이 48.5m, 길이 205m, 총저수량 8,690만t의 다목적댐으로 1993년 12월에 착공하여 2000년 11월에 준공되었다. 어류 조사는 2010년 04월부터 2010년 11월까지 총 4회에 걸쳐 횡성다목적댐을 기점으로 상류 2지점(유평교, 매일교), 횡성호 2지점(구방교, 부동교), 하류 2지점(활아지교, 수백교)에서 조사를 실시하였고 과거 문헌과 비교하여 결과를 분석하였다. 횡성다목적댐의 착공 전/후 조사 결과를 비교한 결과 착공하기 전에는 총 8과 29종 2,325개체가 조사되었으며, 참갈겨니(Zacco koreanus) 576개체(24.8%), 쉬리(Coreoleuciscus splendidus) 316개체(13.6%), 피라미(Zacco platypus) 203개체(8.7%), 배가사리(Microphysogobio longidorsalis) 194개체(8.3%) 등의 순으로 기록되었다. 반면, 착공한 후에는 총 8과 24종 2,769개체가 조사되었으며, 피라미(Z. platypus) 2,169개체(78.3%), 밀어(Rhinogobius brunneus) 91개체(3.3%), 참갈겨니(Z. koreanus) 89개체 (3.2%), 돌고기(Pungtungia herzi) 83개체(3.0%) 등의 순으로 조사되었다. 각 조사지점별로 비교한 결과 상류 2지점(유평교, 매일교)에서는 착공하기 전에 총 6과 20종 609개체가 조사되었으며, 참갈겨니(Z. koreanus) 227개체(37.3%), 피라미(Z. platypus) 74개체(12.2%), 쉬리(C. splendidus) 65개체(10.7%), 돌고기(P. herzi) 43개체(7.1%), 납자루(Acheilognathus lanceolatus) 41개체(6.7%) 등의 순으로 기록되었다. 반면, 착공한 후에는 총 6과 16종 1,923개체가 조사되었으며, 피라미(Z. platypus)가 1,707개체(88.8%)로 대부분을 차지하였고, 그 외 참갈겨니(Z. koreanus) 53개체(2.8%), 돌고기(P. herzi) 46개체(2.4%), 참마자(Hemibarbus longirostris) 35개체(1.8%), 모래무지(Pseudogobio esocinus) 23개체(1.2%) 등의 순으로 조사되었다. 횡성호 2지점(구방교, 부동교)에서는 착공하기 전에 총 6과 22종 721개체가 조사되었으며, 참갈겨니(Z. koreanus) 177개체 (24.5%), 배가사리(M. longidorsalis) 91개체(12.6%), 쉬리(C. splendidus) 88개체(12.2%), 묵납자루(A. signifer) 71개체(9.8%), 피라미(Z. platypus) 45개체(6.2%) 등의 순으로 기록되었다. 반면, 착공한 후에는 총 6과 12종 393개체가 조사되었으며, 피라미(Z. platypus) 228개체(58.0%), 붕어(C. auratus) 56개체(14.2%), 밀어(R. brunneus) 46개체(11.7%), 쏘가리(Siniperca scherzeti) 20개체(5.1%), 동자개(Pseudobagrus fulvidraco) 16개체(4.1%) 등의 순으로 조사되었다. 하류 2지점(활아지교, 수백교)에서는 착공하기 전에 총 8과 25종 995개체가 조사되었으며, 참갈겨니(Z. koreanus) 172개체(17.3%), 쉬리(C. splendidus) 163개체(16.4%), 묵납자루(A. signifer) 96개체(9.6%), 배가사리(M. longidorsalis) 91개체(9.1%), 피라미(Z. platypus) 84개체(8.4%) 등의 순으로 기록되었다. 반면, 착공한 후에는 총 7과 19종 453개체가 조사되었으며, 피라미(Z. platypus) 234개체(51.7%), 밀어(R. brunneus) 42개체(9.3%), 돌고기(Pungtungia herzi) 36개체(7.9%), 참갈겨니(Z. koreanus) 36개체(7.9%), 쉬리(C. splendidus) 10개체(4.2%) 등의 순으로 조사되었다. 본 연구의 조사 및 비교분석 결과 유수역이었던 섬강에 횡성다목적댐이 건설되어 주변 환경이 크게 변화하였고 그 결과 각 조사 지점에서의 어류상이 유수역 선호 어종에서 오염 내성종 및 정수역 선호 어종으로 변화되는 것을 확인하였다.

• Parasites, Hosts and Diseases
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• v.56 no.5
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• pp.501-507
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• 2018

We described here the morphological characteristics for the species identification and fish hosts of Isoparorchis sp. (Digenea: Isoparorchiidae) in the Republic of Korea (Korea). Total 1,371 freshwater fishes collected in Yangcheon (Stream) in Sancheong-gun, Gyeongsangnam-do were examined by the artificial digestion methods to survey the infection status of digenetic trematode metacercariae for 4 years (2013-2016). Adult and larval worms of Isoparorchis sp. were detected in 38 (8.4%) out of 451 fish in 4 species, i.e., Pungtungia herzi, Acheilognathus koreensis, Squalidus japonicus coreanus and Odontobutis platycephala, examined. The infection density was 1.1 worm per fish infected. They were mainly found in the subcutaneous tissues and abdominal cavities. Nodules with worms in the subcutaneous tissues were revealed as the blue ink-colored bulges. Adults leaf-like, $21.6{\times}9.84mm$ in average size. The ratio of body length to body width was 2.20: 1. Oral sucker subterminal, $1.03{\times}1.22mm$. Pharynx muscular, $0.55{\times}0.54mm$. Esophagus very short. Ceca convoluted, terminated near the posterior end. Ventral sucker anterior 1/3.75, $1.99{\times}2.10mm$. The ratio of ventral sucker to oral sucker was 1.74: 1. Testes round to elliptical, both sides of ventral sucker, $1.43{\times}1.33mm$. Vitellaria highly dendritic, posterior 1/3 level. Eggs operculated, embryonated, $52{\times}32{\mu}m$ in size. By the present study, 4 fish species aforementioned are to be listed as the fish hosts of Isoparorchis sp. in Korea and additionally the morphological characteristics are to be described for the species identification.

• Korean Journal of Environmental Biology
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• v.20 no.2
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• pp.152-157
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• 2002

The fauna of freshwater fish and the structure of fish community were investigated from March to October in 2001 at six stations in the middle reach of the Seomjin River, Gokseong-gun. The collected fishes (1,786 individuals) were identified into 30 species of 22 genera belonging to S families. Of them, cyprinid fish occupied 26 species, only one species (Rhinogobius brunneus) was secondary freshwater fish. Dominant species was Zacco platypus (dominance index: 24.2%) and subdominant species was Pungtungia herzi (10.7%). The endemic species of Korea were 11 species including Rhodeus uyekii (36.7%) about the ichthyofauna. In estimation of water quality by diversity indices, the general conditions of water quality of all survey times and all stations were relatively fine $(\beta$-mesosaprobic, diversity index: 2.70). But four survey sites except St. 2 and St. 3 showed severe water pollution with one or move times in total survey periods.

• Korean Journal of Ichthyology
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• v.18 no.2
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• pp.112-118
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• 2006

The ichthyofauna and fish community structure were investigated at eleven stations in Namdae stream, Yangyang during April, 2004 and March 2005 monthly. During the surveyed period thirty five species belonging to fifteen families were collected. Dominant species in number was Triboblodon hakonensis (relative abundance : 27.9%) and subdominant was Zacco koreanus (15.0%). There were five Korean endemic species including Rhynchocypris kumgangensis. Eleven species including Pungtungia herzi are first recorded in this study. There are stabilized fish community structure with dominant species R. kumgangensis in upstream, Z. koreanus and Z. platypus in midstream and T. hakonensis in downstream respectively. But, it is very worried the change of ichthyofauna in foreseeable future because of pumped storage power station construction in midstream.