Fish distribution in the Ba Che and Tien Yen rivers

The ichthyo-fauna in the Ba Che and Tien Yen rivers, northern Vietnam is highly diverse, with a total of 245 species determined. However, data on the distribution of fish species are not sufficiently provided for the whole area. This study was conducted from 2008 to 2011 at 27 stations from the Ba Che and Tien Yen river basins to determine the distribution of fish species according to different sections of the rivers, water bodies, seasons, and salinity levels. The results show that fish species are distributed mainly in the river (with 210 species), concentrated in the downstream area (with 213 species). Fishes are mainly collected in the dry season when the salinity level of river is high, due to seawater intrusion which also brings in 160 species of marine fish. This shows that fish distribution in the research areas is mainly dominated by the presence of marine species. While for freshwater fish, it is clearly affected by the mountainous features. Apart from the common characteristics sharing between the two river basins, but the number of both freshwater and marine fish species in the Tien Yen river are larger than those of Ba Che river, which is related to fresh water surface, river morphology, the width and location of the estuary to the sea. The downstream area is home to the fish species recorded in the Red Data Book of Vietnam and the complementary species for Vietnam, while the middle and upstream of the rivers may offer a high potential of biodiversity, with many possibly new species for science. These are important data for the conservation and sustainable development of fish resources in the Ba Che and Tien Yen river basins.

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A Survey On Marine Fish Species In River of Mahakam East Kalimantan, Indonesia

Omni-Akuatika ◽

10.20884/1.oa.2017.13.2.332 ◽

2017 ◽

Vol 13 (2) ◽

Cited By ~ 1

Author(s):

Iwan Suyatna ◽

Muhammad Syahrir ◽

Mislan Mislan ◽

Yuni Irawati Wijaya ◽

Abdunnur Abdunnur

Keyword(s):

Marine Fish ◽

Fish Species ◽

Water Depth ◽

Fish Community ◽

Marine Species ◽

Demersal Fish ◽

Middle Part ◽

Marine Fish Species ◽

East Kalimantan ◽

Velocity Water

A first survey on a community marine species in river of Mahakam East Kalimantan was performed in December 2015 and May 2016. Fish samplings were carried out from two locations the lower and the middle part of Mahakam. Whilst hydrometric observation of current velocity, water depth and tide was measured not only at the locations but also along the river from 2013 to 2017, tide was only observed in the lower part of Mahakam. However, marine fish species were recognized to reach up the middle part of Mahakam, 230 km from coastline. To describe a community fish structure and its dissimilarity of the two surveyed locations, diversity and bray Curtis index were applied. Almost 15 marine fish species identified in river of Mahakam was demersal fish and index of the similarity of marine fish community between the locations only 0.106.

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COMMUNITY STRUCTURE AND SPATIAL DISTRIBUTION OF FISH JUVENILE IN MANGROVE AND SEAGRASS HABITATS IN PRAMUKA ISLAND

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.28930/jitkt.v8i1.12715 ◽

2016 ◽

Vol 8 (1) ◽

Author(s):

Fathul Amin ◽

M Mukhlis Kamal ◽

Am Azbas Taurusman

Keyword(s):

Spatial Distribution ◽

Community Structure ◽

Fish Species ◽

Species Abundance ◽

Fish Distribution ◽

Line Transect ◽

Observation Area ◽

Significant Difference ◽

Line Transect Method ◽

Distribution Of Fish

This study was aimed to investigate the community structure of fish juvenile, spatial distribution and similarity from both adjacent habitats of mangrove and seagrass. This study was conducted in the eastern part of Pramuka island from April to June 2015. The samples were collected by using line transect method in three observation areas that were spatially connected i.e., mangrove, transition and seagrass zones. The result of the study from three observation zones revealed that there were found 24 species of fishes from 15 families i.e., Siganidae (4 species), Apogonidae (3 species), Ger-reidae (2 species), Terapontidae (2 species), Gobiidae (2 species), Labridae (2 species), Mugilidae, Nemipteridae, Hemiramphidae, Sphyraenidae, Monacanthidae, Atherinidae, Pomacentridae, Lut-janidae, and Lethrinidae (each of them 1 species). According to community structure, the adjacent ob-servation zones did not show a significant difference in the number of species, abundance, and bio-mass. According to fish distribution, fish species in transition zone and seagrass zone were relatively similar and dominated by Gerres oblongus, Fibramia lateralis, and Siganus canaliculatus. Mean-while, in mangrove zone revealed a significant different of fish species than in transition and seagrass zones. In mangrove zone, fish species was dominated by Gerres oblongus and Siganus guttatus. Keywords: spatial distribution, juvenile, mangrove, seagrass, pramuka Island, Siganidae

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Occurrence and distribution of fish species in the Great and Little Miami River basins, Ohio and Indiana, pre-1900 to 1998

10.3133/wri994198 ◽

1999 ◽

Keyword(s):

Fish Species ◽

River Basins ◽

Distribution Of Fish

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COMMUNITY STRUCTURE AND SPATIAL DISTRIBUTION OF FISH JUVENILE IN MANGROVE AND SEAGRASS HABITATS IN PRAMUKA ISLAND

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.29244/jitkt.v8i1.12715 ◽

2016 ◽

Vol 8 (1) ◽

pp. 187-199 ◽

Cited By ~ 1

Author(s):

Fathul Amin ◽

M Mukhlis Kamal ◽

Am Azbas Taurusman

Keyword(s):

Spatial Distribution ◽

Community Structure ◽

Fish Species ◽

Species Abundance ◽

Fish Distribution ◽

Line Transect ◽

Siganus Canaliculatus ◽

Significant Difference ◽

Line Transect Method ◽

Distribution Of Fish

This study was aimed to investigate the community structure of fish juvenile, spatial distribution and similarity from both adjacent habitats of mangrove and seagrass. This study was conducted in the eastern part of Pramuka island from April to June 2015. The samples were collected by using line transect method in three observation areas that were spatially connected i.e., mangrove, transition and seagrass zones. The result of the study from three observation zones revealed that there were found 24 species of fishes from 15 families i.e., Siganidae (4 species), Apogonidae (3 species), Ger-reidae (2 species), Terapontidae (2 species), Gobiidae (2 species), Labridae (2 species), Mugilidae, Nemipteridae, Hemiramphidae, Sphyraenidae, Monacanthidae, Atherinidae, Pomacentridae, Lut-janidae, and Lethrinidae (each of them 1 species). According to community structure, the adjacent ob-servation zones did not show a significant difference in the number of species, abundance, and bio-mass. According to fish distribution, fish species in transition zone and seagrass zone were relatively similar and dominated by Gerres oblongus, Fibramia lateralis, and Siganus canaliculatus. Mean-while, in mangrove zone revealed a significant different of fish species than in transition and seagrass zones. In mangrove zone, fish species was dominated by Gerres oblongus and Siganus guttatus. Keywords: spatial distribution, juvenile, mangrove, seagrass, pramuka Island, Siganidae

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Steroid Hormones in Reproduction and Roles of GnRH-a in Gonadal Maturation of Marine Fish: A Review

Annual Research & Review in Biology ◽

10.9734/arrb/2019/v34i430161 ◽

2020 ◽

pp. 1-12

Author(s):

Huynh Minh Sang ◽

Pham Xuan Ky ◽

Ho Son Lam ◽

Phan Minh Thu

Keyword(s):

Steroid Hormones ◽

Marine Fish ◽

Fish Species ◽

Marine Species ◽

Gonadal Development ◽

Brood Stock ◽

Gonadal Maturation ◽

Final Maturation ◽

Sex Inversion ◽

Reproductive Processes

Reproduction in teleosts is regulated by a series of hormones including gonadotropin-releasing hormones (GnRHs), gonadotropins (GTHs) and steroid hormones. To contribute better understanding of steroid hormones in reproduction and GnRH-a in gonadal maturation, this literature review is concerned with the changes of steroid hormone levels in relation with sex inversion, reproductive behavior and gonadal development as well as the application of GnRH-a for inducing maturation of marine fish. The results revealed that in many species of teleost, steroid hormones E2, 11-11-KT and DHP are abundantly produced in gonadal tissues under the control of pituitary gonadotropins, and are essential for critical steps of gametogenesis. Plasma steroid levels have been used as indicators for both of the sex of the fish and its stage in the seasonal reproductive cycle, particularly with regard to induction of spawning. Determination of plasma steroid levels in relation with the sexual status of the gonads over several reproductive seasons might provide valuable information on the mechanisms of sex inversion in ambisexual fish species. In addition, changes of plasma steroid levels in correlation with gonadal development, number of spawning, fecundity, were described clearly in many marine species. The review also indicated that exogenous administration of GnRH-a triggered for final maturation of brood stock of some teleosts. In summary E2, T, 11-KT and C21 steroids are in relation with sex inversion, reproductive processes and GnRH-a is successful for inducing gonadal maturation in some fish species.

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Nutrient contents of some popular freshwater and marine fish species of Bangladesh

Bangladesh Journal of Zoology ◽

10.3329/bjz.v42i2.23367 ◽

2015 ◽

Vol 42 (2) ◽

pp. 251-259 ◽

Cited By ~ 5

Author(s):

Maria Zaman ◽

M Niamul Naser ◽

Abu Tareq Mohammad Abdullah ◽

Nasima Khan

Keyword(s):

Marine Fish ◽

Fish Species ◽

Proximate Composition ◽

Marine Species ◽

High Energy ◽

Indigenous Species ◽

Marine Fish Species ◽

Mineral Contents ◽

Nutrient Contents ◽

Protein Energy

An investigation was carried out on the proximate and mineral contents of widely consumed freshwater small indigenous species (SIS), culture and marine fish species of Bangladesh. Proximate composition (crude protein, fat, ash, moisture, carbohydrate and energy) and selected mineral (Ca, K, Na, Mg, Fe, Zn and Mn) contents were determined eighteen locally available fish species of Bangladesh. Considering proximate composition high protein fishes are Thai Sarpunti 17.5 ± 0.15%, Rui 16.82% ± 0.02; high fat fishes are Thai Pangus 10.03±0.1%, Thai Sarpunti 9.38±0.37%; high Ash contents in Poa 4.78 ± 0.92 %, Ganges Chapila 3.96 ± 0.51%, Thai Sarpunti 3.31 ± 0.14%; high energy found in Thai Sarpunti 157.02 ± 2.61 Kcal/g and Thai Pangus 151.59 ± 2.71 Kcal/g. Considering mineral compositions, Ca rich fishes are Punti 1984.32 ± 1.1 mg, Mola 1267 ± 2.2 mg, Dhela 1717.8 ± 3.1 mg, Chapila 1100.6 ± 1.21 mg, Thai Sarpunti 1373.9 ± 5.32 mg. K rich fishes are Taki 501.47 ± 2.9 mg, Coral 415.24 ± 2.8 mg and Na rich fishes are Thai Sarpunti 780.01 ± 3.8, Ganges Chapila 415.32 ± 2.34 mg, Loitta 497.38 ± 4.21 mg. Trace mineral, Mg is high in Coral 187.98 ± 0.61 mg, Punti 148.16 ± 0.62 mg, Datina 144.05 ± 0.35 mg, Kachki 143.49 ± 0.3 mg fishes, whereas Fe are high in Chapila 15.95 ± 0.03mg, Punti 10.31 ± 0.2, Poa 7.01±0.66 and Zn in Thai Sarpunti 40.20 ± 0.34 mg, Poa 29.32 ± 0.32 mg fishes. Considering Mn, Chapila 6.34 ± 0.04 mg is the highest. This study indicate that small fishes with bones are important source of essential minerals especially Ca. Culture species found to be rich in source of protein, energy and lipids. Marine species exhibit good combination of protein and minerals. This study also encourage to take a culture species like Thai Sarpunti (Barbonymus gonionotus) for its high nutritional meat values and also to consume marine fishes and small fishes with bones for better nourishment. Promotion of the production and consumption of small fishes therefore be encouraged for better nutritional achievement.Bangladesh J. Zool. 42(2): 251-259, 2014

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