• Journal of Fisheries and Marine Sciences Education
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• v.21 no.4
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• pp.576-585
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• 2009

The aim of this study is to indicate that how to select the releasing fishes for the nourishment of fisheries resources in small ranching area around the Gunsan coastal seas. The collected data were analysed, and revealed that the proper fisheries for releasing around the seas are Limanda Yokohame, sebastes schlegeli, paralichthys olibaceus, black porgy and little clam.

• Korean Journal of Ichthyology
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• v.22 no.3
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• pp.179-185
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• 2010

This is a study of the fish assemblages in eelgrass beds of Geoje Bay on Geoje Island, Korea. Samples were collected by surf net monthly from June 2006 to May 2007. A total 26 species, 1,825 individuals, and 4,483.1 g of fishes were collected. The dominant species were Acentrogobius pflaumii, Aulichthys japonicus, Gymnogobius heptacanthus, Rudarius ercodes, Chaenogobius annularis, Gymnogobius urotaenia, Syngnathus schlegeli, Pterogobius elapoides, Zoarchias glaber, Takifugu niphobles, Zoarchia suchidai. These species accounted for 90.6% of the total number of individuals and 76.2% of the biomass of the fishes collected. The fish assemblages in the eelgrass beds showed clear seasonal changes; the number of fish species and individuals increased in March and were highest in September, whereas the biomass attained its highest level in May and subsequently decreased. Meanwhile the species diversity indices showed their highest value in December.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.44 no.6
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• pp.569-576
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• 2011

Proximate and fatty acid compositions in muscle tissue were studied in 14 species of coastal and offshore fishes in Korea. Lipid content ranged from 0.57 to 10.5% and was higher in migratory and reef dwelling fishes than in demersal fishes. Protein content ranged from 14.4 to 20.3% and moisture content ranged from 72.4 to 81.8% in all fish samples. There was a negative correlation between lipid and moisture content in all fish samples (r= -0.90, P<0.001). The prominent fatty acids were 16:0, 22:6n-3 (docosahexaenoic acid, DHA), 18:1n-9, 20:5n-3 (eicosapentaenoic acid, EPA), 16:1n-7, 18:0 and 18:1n-7. Most demersal fishes contained considerably higher amounts of 20:4n-6 and/or 22:5n-3 compared with migratory and reef dwelling fishes. The proportion of total polyunsaturated fatty acid (PUFA), including DHA and EPA, was higher in demersal fishes (38.6-54.0%) than in migratory and reef dwelling fishes (23.5-35.2%).

• Korean Journal of Fisheries and Aquatic Sciences
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• v.37 no.5
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• pp.433-439
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• 2004

The movement range and diurnal behavior of red seabream (Chrysophrys major) tagged by the ultrasonic pinger externally were measured by acoustic telemetry techniques in the marine ranch of Tongyeong on 20 March to 30 October, 2003. The movement of fishes was monitored with the radio-acoustic linked positioning (RAP) buoy system and VR2 receivers. The test fishes showed behavior. pattern going to deep waters and returning to shallow waters. They moved gradually to deep waters as time goes by. They had a tendency to move wider range in night-time than day-time. It was found that the test fishes rarely showed a significant response to the artificial reefs.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.43 no.6
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• pp.756-759
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• 2010

The feeding habits of olive flounder, Paralichthys olivaceus were studied using 126 specimens collected from coastal waters off Taean, Korea from April 2008 to March 2009. The total lengths of P. olivaceus ranged from 16.7 to 40.6 cm. P. olivaceus was a piscivore that consumed mainly fishes. The diet also included small quantities of shrimps, cephalopods, polychaetes and mysids. Although, P. olivaceus mainly consumed fishes of all size classes, some degree of change in diet composition was found; i.e. after fishes, smaller individuals fed more on shrimps, whereas larger individuals consumed more cephalopods.

• Korean Journal of Ichthyology
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• v.23 no.2
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• pp.135-144
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• 2011

Collections were made monthly using beam trawl from March 2005 to February 2006 in Gujora, and from June 2006 to May 2007 in Geoje Bay to investigate the species composition of Juvenile and Immature Fishes of both coastal areas. Fishes collected in the sandy shore of Gujora were 6 orders, 14 families, 20 species, 224 individuals, and 534.9 g in total. Favonigobius gymnauchen, Trachioncephalus myops, Pseudoblennius percoides, Sagamia geneionema, Repomucenus beniteguri, and Pseudorhombus cinnamoneus were mainly collected. These 6 species accounted for 83.9% of total individuals and 47.1 % of total biomass. On the other hand, fishes collected in Geoje Bay were 4 orders, 8 families, 14 species, 1,406 individuals and 1,899.7 g in total. Acentrogobius pflaumii, Platyce phalusindicus, Chasmichthy dolichognathus, Acanthogobius flavimanus, Gymnogobius urotaenia, and Synechogobius hasta were mainly collected. These 6 species accounted for 97.7% of total individuals and 96% of total biomass. The greatest numbers and biomass of fishes were collected in summer and the lowest in winter. In Geoje Bay, the number of species and individuals reached the peak in September and August, respectively. However, both species and individual numbers were highly fluctuated in Gujora.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.54 no.2
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• pp.224-230
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• 2021

This study assessed the contamination levels of total aerobic bacteria, fungi, coliforms, Escherichia coli, and Staphylococcus aureus, and qualitative analysis of Bacillus cereus, Salmonella spp., Listeria spp., and Vibrio spp. in four frozen-raw sliced fishes (cuttlefish, flatfish, salmon, and shrimp) for sushi production. The total aerobic bacteria, fungi, and coliforms were 2.95-3.38, 1.96-2.88, and 0.92-1.29 log CFU/g, respectively. In particular, shrimp was highly contaminated with total aerobic bacteria (3.38 log CFU/g) and fungi (2.88 log CFU/g). Over 3 log CFU/g of total aerobic bacteria was also detected in cuttlefish, flatfish, and salmon. Less than 1-2 log CFU/g of E. coli was detected in all frozen samples. S. aureus was detected at 2.25-3.13 log CFU/g in most samples. B. cereus was qualitatively detected at 25% in most samples, except for salmon (0%). Salmonella spp., L. monocytogenes, and Vibrio spp. were qualitatively detected at 25-50% of all four samples. The microbial contamination levels determined in the current study may be potentially used as basic data to perform microbial risk assessments of frozen-raw sliced fishes.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.50 no.1
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• pp.77-84
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• 2017

Three species of pufferfishes (family Tetraodontidae) were examined to determine their morphological characteristics based on meristics, morphometrics, olfactory organs, and lateral line systems of specimens collected from the Chennai Fish Market in Tamil Nadu, India, in December 2016. The three species, which are all previously unreported in Korea, are Chelonodon patoca (Hamilton, 1822), Lagocephalus spadiceus (Richardson, 1845), and Arothron immaculatus (Bloch and Schneider, 1801). For nostril shape, fishes of the genus Lagocephalus have two nostrils, while Arothron and Chelonodon have none. Fishes of the genera Lagocephalus and Arothron have a single well-developed lateral line on the body, while Chelonodon fishes have two lateral lines that merge on the caudal peduncle.

• Journal of Aquaculture
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• v.21 no.1
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• pp.13-18
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• 2008

Marine birnavirus(MABV) are well known fish pathogens in Asian countries such as Korea, Japan, and China. Prevalence of viral disease, geological distribution and host or reservoir of viruses were investigated from wild marine fishes in southern coast of Korea in 2003 and 2005. RT-PCR results showed that MABV were detected in 17 fishes(10.6%) from 160 fishes. Comparative analysis of the nucleotide sequences and the deduced amino acids of MABV genome from wild fishes were similar to reference strains of MABV and distinguished with IPNV strains.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.52 no.6
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• pp.745-751
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• 2019

Seasonal variation in species composition of fishes in the Sannam reservoir in Changwon, Korea was determined using samples collected by a three-sided fyke net in 2018. During the study period, we collected 2,181 individuals of 9 species, with a total weight of 111,552.2 g. The dominant species were Lepomis macrochirus, Carassius carassius, Erythroculter erythropterus, and Cyprinus carpio. These species accounted for 96.1% of the total number of individuals. The number of fish species, number of individuals, biomass and species diversity indices fluctuated with the seasons. The peak number of fish species occurred in May and August, the biomass of fishes was highest in May. Whereas the number of individuals was highest in February.