• Journal of Aquaculture
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• v.11 no.1
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• pp.59-66
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• 1998

The effectiveness of lidocaine HCI (lidocaine HCI/sodium bicarbonate mixture) was tested as an anaesthetic for Rhynchocypris oxycephalus and R. steindachneri at three different temperatures of $10^{\circ}C.$, $15^{\circ}C.$ and $20^{\circ}C.$. Based on the exposure and recovery time, effective doses of lidocaine HCI were proven to be 300ppm ($20^{\circ}C.$), 400ppm ($15^{\circ}C.$), and 600ppm($10^{\circ}C.$) for R. oxcephaus, and 400ppm ($20^{\circ}C.$), 500ppm ($15^{\circ}C.$), and 600ppm ($10^{\circ}C.$) for R. steindachneri respectively. Anaesthetic dose and temperature-dependent relationship in exposure and recovery time were obseved for these two Rhynchocypris spops. There were size-related increases of exposure time on R. steindachneri in each dose of lidocaine HCI. However, dost-dependent increase of recovery time wea found in only the large size group of Rhynchocypris spp.

• Journal of Aquaculture
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• v.13 no.3
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• pp.193-196
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• 2000

Rhynchocypris oxycephalus and R. steindachneri show very similar karyotypes: 2n=50(EN=90), consisting of 12 metacentics, 28 submetacentrics and 10 acrocentrics with a gradual decrease in chromosome size, but with significant differences in nuclear DNA content of 2.64 and 2.52 pg/nucleus, respectively (P<0.05). Although the erythrocyte measurement and parameters of two species were similar, R. oxycephalus erythrocyte number was lower than that of R. steindachneri. Mode in karyological evolution within the genus Rhychocypris shows an increase of nuclear DNA without apparent changes in karyotype and erhthrocyte size.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.31 no.6
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• pp.785-790
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• 1998

The experimental transportation of Rhynchocypris steindachneri was carried out to study the effects of lidocaine-hydrochloride on water parameters. The dissolved oxygen, ventilation rate, ammonia nitrogen, and pH of control group, sham control group, and lidocaine-hydrochloride treated groups of 2,5 ppm, 5 ppm, 10 ppm and 20 ppm at time of 30 min, 60 min, 90 min, 120 min, 240 min and 360 min after elapsed from treatment were tested. During the experiment time it was found that lidocaine-hydrochloride treated groups were most effective, followed by sham control and control, in decreasing the oxygen consumption and the excretion of ammonia by the fish. There were lidocaine-hydrochloride dose-related decrease in oxygen consumption and the excretion of ammonia. Decreasing in pH value of lidocaine-hydrochloride groups and sham control group was much more higher than that of control group. These results reveal lidocaine-hydrochloride is effective as sedative for transportation mixture in R. steindachneri.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 1998.06a
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• pp.325-326
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• 1998

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 1998.06a
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• pp.329-330
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• 1998

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 1998.06a
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• pp.327-328
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• 1998

• Korean Journal of Ichthyology
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• v.18 no.3
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• pp.244-250
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• 2006

The ichthyofauna and fish community structure were investigated at five stations in Yeongok stream, Gangneung, during April and December 2005 monthly. During the surveyed period twenty nine species belonging to ten families were collected. Dominant species in number was Zacco platypus (relative abundance : 29.0%) and subdominant was Rhynchocypris steindachneri (12.1%). There were six Korean endemic species including Rhynchocypris kumgangensis. Koreocobitis rotundicaudata and Luciogobius guttatus that were not reported in near streams were collected in Yeongok stream only. Ladislabia taczanowskii was considered as a geographically important species. There were stabilized fish community structure with species diversity index of the community 2.521 in Yeongok stream ichthyofauna.

• 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%.

• Korean Journal of Environment and Ecology
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• v.19 no.2
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• pp.177-187
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• 2005

Fish fauna of mountain streams in the Odaesan National Park area was investigated from May to October 2004. A total of 2,580 individuals were collected and classified into 26 species belonging to 9 families at the 25 sites. There were 8 Korea endemic species $(30.77\%)$, including Pseudopungtungia tenuicorpa, Silurus microdorsalis, Coreoperca herzi. Exotic species, Oncorhynchus mykiss was collected in this survey. Dominant species were Rhynchocypris kumgangensis $(37.17\%)$, and subdominant species was Rhynchocypris steindachneri$(23.02\%)$. Also Zacco platypus, Zacco temmincki, Oncorhynchus masou masou, Brachymystax lenok tsinlingensis, and Ladislavia tazanowskii were numerous. In spite of the geographical isolation by Taebaek-sanmaek, 8 species were introduced from the Han River systems to eastern water systems in Odaesan National Park.

• Korean Journal of Ecology and Environment
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• v.46 no.2
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• pp.192-204
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• 2013

Fish community structure and inhabit status of endangered fish species were investigated during April to November 2011 in Baebong Stream, Gangwon do, Korea. The number of fish species inhabiting the upper section (Stations 1~3, 5) was 14 and the stream bottoms were mostly composed of cobbles and boulders (Aa-type). Meanwhile, the number of fish species inhabiting the lower section (Stations 4, 6, 7) was 26 and the stream bottoms were mostly composed of pebbles, cobles and sand (Bb-type). A total of 26 species belonging to ten families were found in the stream during the survey period. The dominant and subdominant species were Rhynchocypris steindachneri (31.1%) and Squalidus multimaculatus (13.3%), respectively, and others such as Pungitius kaibarae (11.0%), Zacco koreanus (7.8%), Misgurnus anguillicaudatus (7.0%), Iksookimia pacifica (5.5%) and Z. platypus (5.3%) were followed in the order. Four species of Squalidus multimaculatus, Z. koreanus, I. pacifica and Liobagrus andersoni were endemic to Korea. And, Lethenteron japonica, L. reissneri, Pungitius sinensis and Cottus hangiongensis were endangered fish species in this stream. Oncorhynchus keta, L. japonica and Tribolodon hakonensis were anadromous species, and Plecoglossus altivelis was an amphidromous species. The similarity index based on species composition and abundance clearly divided the fish community structure of the Baebong Stream into two sections fragmented by a weir installed into the stream. It is necessary to install a fish ways on the weirs for a fish migration and movements.