The study assessed the economic analysis of catfish production in Anambra West Metropolis, Anambra state, Nigeria. The sample size for the study comprises one hundred and twenty catfish farmers in Anambra West metropolis who were purposively selected. Data were collected using structured interview schedule by the researcher and other research assistants. Simple descriptive statistics such as percentage, frequency, mean scores and standard deviation Net Farm Income were used for data analysis and result presentation. Findings of the study revealed that catfish production is highly profitable in the study area with estimated total cost of ₦14,246,163 and the Net Farm Income of ₦20,000,000 and ROI of ₦2.47. Catfish famers in faced some major constraints such as high cost of feed and others. Therefore, to eliminate or minimize the constraints identified, the study suggests government involvement to control and lower the import taxes levied upon dealers who import foreign feeds and others.

Fishery of 7 pelagic fishes within and outside PFZ during 2015 to 2019 reveals that the average length of these fishes within PFZ is more compare to outside PFZ areas. This study carried out on Mirkarwada harbor along the Maharashtra coast. The fish catch from different fishing gears shows the occurrence of few species every year, these fishes were only considered for the average length during study period. The average length of these pelagic species caught in the purse seine found more from within PFZ than outside PFZ. It can be concluded that the advisories seems beneficial for pelagic feeding fishes.

Kanwar Lake is Asia's largest fresh water ox-bow lake. It lies in Manjhaul sub-division of Begusarai district in North Bihar. It is the only Ramsar site in Bihar. Due to rich biodiversity and socio-economic value Kanwar Lake deserve its international importance. The Kanwar Lake is situated at 250 55' N latitude 860 10'E longitude. A collection of species of ornamental fishes was made from the Kanwar Lake. The present investigation work highlight the Kanwar tal's ornamental fish diversity. The study was carried out during the year 2021-22. Different types of nets, traps and other fishing gears were used by the fishermen during study period. The maximum number of sample ornamental fishes were caught mainly from the eastern and southern part during pre-monsoon and post-monsoon period from the Kanwar Lake. The 26 species belonging to 14 different families of class actinopterygii were identified having order cypriniformes and others. Main aim to perform the study is to highlight the awareness of identification and culture of indigenous ornamental fishes of Kabar Lake.

The population dynamics of Hydrocynus brevis from Dadin-Kowa reservoir were studied. Population dynamic parameters such as growth, mortality and recruitment patterns were analyzed using length frequency data over 12-month period employing FiSAT II software. Findings revealed that K = 1.7-yr., L∞ = 33.33 cm and Tmax = 1.76 years. Mortality indices revealed that the fish is slightly above exploitation threshold (F > Eopt ≤ 0.5). However; the major source of population decay is associated with natural factors (M = 2.87-yr.). Bimodal recruitment pulses were observed with Lm = 22.9 cm, Lc/ L∞ = 0.29. Restocking program is suitable to ensure its continuous existence as it seems to have low population, and experiencing recruitment overfishing.

The present study was conducted on the Kolar River, a tributary of the Narmada River. The fish diversity of the Kolar River in the Sehore district of Madhya Pradesh, Central India, is represented in this view. It was investigated from February 2021 to June 2022. The Kolar River is a vital source of water for the people who live in nearby villages, primarily for domestic use. In the community, fishing for a living and food is a common practise. The study's goal was to investigate the Kolar River's water quality and fish fauna. During the investigation, six sampling stations were chosen for the collection of data: Near reservoir, Lawakhadi, Veerpur, Near old bridge, Dana baba temple, Amdoh, and Jholiyapur.The study discovered 25 fish species from eight orders (Cypriniformes, Siluriformes, Perciformes, Osteoglossiformes, Synbranchiformes, Clupeiformes, and Beloniformes). Cypriniformes are the dominant order of fishes in this area (Kolar), with the highest number of ten species recorded. The recorded fishes were found to be widely distributed and abundant in the river.

The aim of this study provides a retrospective analysis of the recorded shark attacks in Greece over the last 180 years. Data on recorded shark attacks in Greece were obtained from various sources. A total of 15 shark attacks were identified and analysed. The majority of the attacks occurred in the waters off islands or coasts, with the highest incidence in the 1950s. The most common victims were swimmers and divers. The species of sharks involved in the attacks could not be determined in all cases, but those that were identified in fatal incidents were mostly great white sharks. This study highlights the rarity of shark attacks in Greece and emphasizes the need for continued monitoring and awareness of potential risks associated with swimming or participating in water activities in Greece. Further studies are required to better understand the factors contributing to the occurrence of shark attacks in Greece.

The present study was conducted to assess the effects of different feed regimes for nursing knife fish (Notopterus notopterus) larvae up to 35 days. Larvae of knife fish were reared in 50 L tank with Moina, Tubifex worm, and commercial feed powder substituted in different culture days. Feeding larvae with Tubifex worms during nursing found to best for growth rate and survival rate of knife fish. The best result was obtained when larvae were fed 0-5 days Moina, 6-20 days tubifex worm, and 21–35-day feed powder with weight gain 0.31 g, length gain 2.36 cm, and survival rate 59%. It is concluded that feeding larvae with Tubifex worm from day 6 to day 20 resulted in a significant difference (p

Aquaculture production has increased considerably nowadays due to intensive culture and deploying biological techniques. Seafood is expected to be the future trustworthy food source that is going to serve the poor. Sustainability can be achieved by providing the nutritious and completely balanced feed. Aquaculture has many issues like efficiency in feeding, prevention of overfeeding for fish, avoiding wastage of food, maintaining good health conditions in fish, using advanced biotechnological methods, and fish consumption connected with human health. Prevention of nutrient deficiency and the occurrence of disease in fish can be achieved only by providing adequate nutrients. This study shows the effect of balanced feed on fish health, well-being, and prevention of disease in fishes.

Aloe vera variety barbadensis is a potential alternative antimicrobial plant extract that has been widely used in humans. The objective of this study was to investigate the susceptibility of selected bacterial isolates from cultured freshwater fish to different concentrations of Aloe vera variety barbadensis crude extract. Using Minimum inhibitory concentration method by Broth dilution technique, the extract was diluted in distilled water to concentrations of 250 mg/ml, 125mg/ml, 62.5mg/ml, 31.25mg.ml, 15.63mg/ml,7.85 mg/ml, 3.93 mg/ml and 1.96 mg/ml. Eighteen (18) bacterial isolates namely Enterococcus faecalis NT2I3, Lysinibacillus fusiformis MT8G4, Bacillus cereus NC5K2, Bacillus cereus (MT7G3), Micrococcus luteus (MC3K2), Kurthia gibsoni (NT5G5), Bacillus thuringiensis NT4G4, Aeromonas hydrophila NT5K2, Aeromonas hydrophila MT7G2, Pseudomonas mendocina NT5G2, Pseudomonas putida MT7I5, Enterobacter cloaca MT6G2, Aeromonas veronii NT4G1, Citrobacter braakii NC3S2, Citrobacter freundii NC3G3, Escherichia coli NC2G1(ii), Escherichia coli MT2G1 and Hafnia alvei MC3K1were each suspended in physiological saline to a turbidity matching 0.5 Mc Farland opacity tube. Then for each extract concentration, 1 ml was mixed with 0.1 ml of respective bacterial suspension and incubated at 37 °C for 24 hours. Only 1 isolate (Kurthia gibsonii) was susceptible at a MIC of 62.5 mg/ml of Aloe vera. Seven isolates (Bacillus cereus MT7G3, Micrococcus luteus, Aeromonas hydrophila NT5K2, Aeromonas hydrophila MT7G3, Aeromonas veronii, Citrobacter braakii and Escherichia coli NC2G1 (ii)) were susceptible at a MIC of 125 mg/ml of Aloe vera. Five isolates (Bacillus cereus NC3K2, Bacillus thuringiensis, Pseudomonas putida, Enterobacter cloaca and Enterococcus feacalis) were susceptible at a MIC of 250mg/ml of Aloe vera. Resistance to the highest concentration of Aloe vera was observed in five isolates namely Lysinibacillus fusiformis, Pseudomonas mendocina, Citrobacter freundii, Hafnia alvei and Escherichia coli MT2G1. Aloe vera variety barbadensis extract was shown to be efficacious against most Gram positive and Gram negative bacteria isolated from cultured fish at a concentration between 125 mg/ml to 250 mg/ml.