Asian Journal of Fisheries and Aquatic Research

In order to estimate fecundity of threatened small indigenous fish species, tit punti (Pethia ticto), an investigation was done at the Field Laboratory Complex, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh during June to August, 2017. The mean total lengths were 5.39 ±0.58, 5.20 ± 0.43, 5.79 ± 0.97 cm and mean ovary weights were 0.45 ± 0.20, 0.38 ± 0.15, 0.53 ± 0.26 g for the month of June, July and August, respectively. The fecundity of P. ticto for the month of June was estimated to be 1120-13892 with a mean of 5319.62 ± 3169.16, for the month of July it was 1071-12325 with a mean of 5407.68 ± 3186.82 and for the month of August it was 2268-14328 with a mean of 5919.92 ± 3436.29. The gonadosomatic index (GSI) were 16.62 ± 3.35, 19.01± 4.55 and 14.75± 2.53 for the month of June, July and August, respectively. The highest GSI was observed in July (25.77) and the lowest was 10.53 in June. Information of fecundity and GSI of P. ticto will be helpful for artificial propagation, conservation, and management of this fish species.

This research aims to determine the shelf life of Nori from Eucheuma cottonii in aluminum foil packaging using the Accelerated Shelf Life Test (ASLT) method with the Arrhenius approach model. This research was conducted using aluminum foil packaging to package Eucheuma cottonii nori products in 2 different storage temperatures, namely 25°C and 35°C. Observations were made on the 35^th day with a countdown method which included sensory testing and moisture content testing. The data from the observations had analyzed the estimation of shelf life using the Arrhenius approach model. The results showed that the taste quality parameter is a critical parameter that determines the shelf life of Eucheuma cottonii nori using aluminum foil packaging. The shelf life of nori from Eucheuma cottonii using aluminum foil packaging has a shelf life of 2 months 14 days 17 hours.

A fabricated modified single screw fish feed extruder was used to extrude formulated floatable fish feeds from obtainable available feed ingredients. They were fed to 225 Clarias garienpinus (mean weight of 56  4.22 g) for 120 days in order to compare their nutritional values with that of a commercial feed. The fishes were first acclimatized for a period of 48 hours under laboratory condition. The weight of the fishes were taken every two weeks and recorded in comparison with the commercial feed (Durante) which served as the control. At the end of the feeding trials, the fishes were weighed, sacrificed and analysed for whole body composition, haematological status and proximate analysis. At the end of the feeding trial, Treatment 1 had the highest mean values of growth and nutrient utilization indices on Clarias garienpinus at standard deviations of 260.77 g (45.59%), 2.01%, 1.92 and 52.10% for the percentage of weight gained, specific growth rate, feed conversion ratio and feed conversion efficiency of the experimented fishes respectively when compared with the commercial feeds (Control) that had mean values of 416 g (71.36%), 2.18%, 1.20 and 83.33%. Treatment 4 had the lowest weight gained with mean values of 99.67 g (17.77%) 1.67%, 5.02 and 20.00% respectively. The white blood cell of the fishes in Treatment 1 had a high value of 6600 when compared to that of the Control which had a value of 7500. Treatment 1 (T₁R₁) experimented on Clarias garienpinus, gave the highest values of growth performance and nutrient utilization compared with other treatments in terms of its whole body composition, proximate analysis and haematolgical status. This implies that treatment 1 experimented on Clarias garienpinus, was the best and can be used for feeding fishes since their values are closer to that of the control. There was significant differences in the final weight of fish fed with treatment 1, 3 and 4 (p > 0.05). However, there was no significant difference in treatments 1 and 2.

Fishes are very important food resources in developing countries, due to high protein content and its nutritional value. The present study deals with Ichthyofaunal diversity of Bhagar oxbow Lake, in Dumraon, District, Buxar. Total of 44 freshwater fish species were listed that belonging to 30 genera, 16 families and 7 orders, described in the present study from February, 2018 to January, 2020. Among them Cypriniformes was the dominant order in term of species diversity that represent (16 species) while the Puntius is the most dominant genus, and held a major portion of the lake. Siluriformes (11 species), Perciformes represented with 6 species, Channiformes (4 species), whereas Mastacembeliformes & Clupeiformes represented (3 species) each and Tetraodontiforme represented only (1 species). Fish of the family Cypriniformes was the most abundant 37.20% of the total fish species followed by the family Siluridae 25.58% and Perciformes 13.95% were reported. Order Channiformes represent 9.30%, followed by the family Clupeiformes 6.97%, Mastacembliformes, 4.3% and Tetrodontiform represented with 2.32% of the total fish species. In the Bhagar oxbow lake, a large number of fish species have edible as well as ornamental and medicinal values. The species composition of ichthyofaunal diversity can also be better understand by this paper. This is the first ever study on the fish diversity and would help in explore the fish fauna and to develop a sustainable fishery practices need to Bhagar oxbow lake in Dumraon. 

The research was conducted for two weeks starting from 26 October 2020 to 9 November 2020 at Singgamanik local fish seed center, Karo regency, North Sumatra province. The Singgamanik Local Fish Seed Center is located in a wet area with a tropical climate. Therefore, this study aims to determine the technicalities of tilapia hatchery at the Singgamanik Local Fish Seed Center (LFSC). The Singgamanik Local Fish Seed Center (LFSC) has water sources that come from river water, rainwater, and ground water. The area of the Singgamanik Fish Seed Center is 1.5 hectares, consisting of 48 pond plots and one Singgamanik Fish Seed Center office building, 1 hall building, and 1 mesh building. Primary data collection techniques were carried out by observation, interviews and active participation, while secondary data were obtained from the literature. The Singgamanik Local Fish Seed Center (BBI) was established in 1980 in Singgamanik Village, Munte District, Karo Regency, North Sumatra. Tilapia in Indonesia is an economically important fish in the world because of its easy cultivation method, good taste, relatively affordable prices, and a wide tolerance to the environment.