Open Access Short Research Article

First Record of Pseudotolithus senegallus (Cuvier, 1830) in the Mediterranean Sea

Elsayed H. Kh. Akel

Asian Journal of Fisheries and Aquatic Research, Page 17-20
DOI: 10.9734/ajfar/2021/v11i530215

This article firstly records Pseudotolithus senegallus (Cuvier, 1830) species in the Mediterranean Sea. juvenile specimen of Pseudotolithus senegallus (Cuvier, 1830) with total length 15.5 cm and total weight 37 g, was obtained by experimental  bottom trawling using  commercial bottom trawler (stretched mesh size: 15 mm; duration time: four hours; location: east of Suez Canal main stream in the Mediterranean, off Port Said). Opercle lining jet black, showing through a dark blotch externally. Axils of pectoral-fin base dark, distal portion of caudal fin darkish whereas anal and pelvic fins are yellowish. Gas bladder with a pair of arborescent appendages, dividing into short anterior branches and a dozen or so long tubular posterior appendages along sides of bladder beyond its tip. I suggest the method of introduction to the Mediterranean waters is ballast water of ships as it is recorded only from Mauritania to Angola on the western coast of Africa.

Open Access Original Research Article

The Effects of Different Natural Anesthesia on Survival of Juvenile Sang kuriang Catfish (Clarias gariepinus) on Closed Wet System Transportation

Mukhammad Rifqi Almumtaz, Kiki Haetami, Roffi Grandiosa, Walim Lili

Asian Journal of Fisheries and Aquatic Research, Page 1-10
DOI: 10.9734/ajfar/2021/v11i530213

This research aims to understand the effect of the different natural anesthesia on the survival rate of sangkuriang catfish juvenile which was transported using closed wet system fish transportation. We discussed selected natural anesthesia for effectiveness, induction times and recovery times in the application of anesthesia for transportation. The benefits of this research were as a reference to choose the best natural anesthesia for catfish juvenile transportation. This research used the experimental method on Completely Randomized Design (CRD) with 4 treatments (clove oil, nutmeg oil, lemongrass oil, and control) with 3 replications. Measured parameters were survival rate after fish transportation, survival rate after aquaculture for 7 days, induction times, recovery times,and water quality such as temperature, dissolved oxygen (DO), pH, and ammonia. The result was clove oil had high survival rate after fish transportation and cultivated for 7 days which is 98,67% and 87,33%. This treatment had quicker time for induction of catfish juvenile than other treatments which was 12.59 minutes although recovery time (10.34) minute was assumed lower than other treatments.

Open Access Original Research Article

The Effect of using Fine Bubbles (FBS) on the Growth of Catfish Seeds (Pangasianodon hypopthalmus) with Different Stocking Density on Aquaponic System Using Fine Bubble

Rafli Bahtiar, . Iskandar, . Rosidah, Herman Hamdani

Asian Journal of Fisheries and Aquatic Research, Page 11-16
DOI: 10.9734/ajfar/2021/v11i530214

This study aims to determine the stocking density that can increase the survival rate of catfish seeds and to analyze the growth rate of catfish seeds in aquaponics systems using FBs. The catfish seeds used in this study were 4-5 cm in size with a weight of 0.5-1.0 g. The types of plants used were ground water spinach from the seedlings themselves and the FBs used had a pressure of 5.5 atm. The method used was an experimental method with a completely randomized design consisting of treatment A 375 fish, treatment B 450 fish, treatment C 525 fish, and treatment D 600 fish with a volume of water of each treatment is 150 L. Catfish seeds were maintained for 35 days. The results of statistical tests showed no significant difference and SR was also not significantly different. Statistically, the aquaponics system using FBs was able to support stocking densities of up to 600 individuals/150 L.

Open Access Original Research Article

The Relation of Nitrate and Phosphate to Phytoplankton Abundance in the Upstream Citarum River, West Java, Indonesia

Kristina Marsela, Herman Hamdani, Zuzy Anna, Heti Herawati

Asian Journal of Fisheries and Aquatic Research, Page 21-31
DOI: 10.9734/ajfar/2021/v11i530216

Citarum River is the longest river in West Java Province, it is utilized for various anthropogenic activities that will affect the water quality, ecological state, and parameters of nitrates and phosphates in the waters of Citarum River. Nitrate and phosphate content can affect Phytoplankton abundance. Phytoplankton is a bioindicator to determine water quality. The purpose of this study is to determine the association of nitrates and phosphates with the abundance of phytoplankton and determine the quality of water in the Citarum River. The study began in August 2020 until September 2020. The research uses a survey method with a purposive sampling technique. Sampling was carried out at 5 stations with 5 times repetitions every 7 days. The water parameter analyzed are transparency, temperature, current, pH, DO, BOD, PO42-,NO3-, Phytoplankton abundance, diversity index, and dominance index. Results showed that phytoplankton in the citarum river there were 24 genera divided into 4 phylum. Diversity index during the study reached between 0,91 – 0,99 and dominance index was in the range 0,01 – 0,2. Phytoplankton abundance ranges from 11 to 1292 ind/L. The highest genera phytoplankton composition at each station was found is Synedra as much as 1087 ind/ L. Nitrate content ranges from 0.13 - 0.33 mg/l and phosphate content range from 0.13 - 0.29 mg/l. The acquisition of R square value based on the simultaneous analysis of the relationship between nitrate and phosphate and the abundance of phytoplankton was 43,9% and 56,1% was influenced by other several factor namely temperature, water transparency, nutrient, and water flow.

Open Access Original Research Article

Analysis of Consumer Preferences in Selecting Processed Fish Products (Case Study in Cicadas Market, Bandung City, Indonesia)

Fajar Ilyas, Asep. A. H. Suryana, Lantun Paradhita Dewanti, Iwang Gumilar

Asian Journal of Fisheries and Aquatic Research, Page 32-42
DOI: 10.9734/ajfar/2021/v11i530217

This study aims to analyze processed fish products which are preferred by the consumers in the Cicadas Market in Bandung City, (Country?) and to analyze the attributes that consumers consider the most in choosing processed fish products in the Cicadas Market in Bandung City. The method used in this research is a case study method using descriptive statistics. Data were collected by direct interviewi of the respondents who were in Cicadas Market using a questionnaire. The attributes observed were packaging color, type of packaging, product color, taste, and price. The questionnaire used has been tested using validity and reliability tests. Respondent characteristics and consumer behavior were analyzed descriptively, while preferences for processed fish products, such as Tuna fish, fish balls, and pempek, as well as the attributes in processed fish products that consumers consider in choosing processed fish products, were analyzed using Chi-Square. The results showed that the processed fish product which is the consumer preference in Cicadas Market is tuna fish mackarel. The most important aspects to consider in choosing Tuna fish mackarel product include the green packaging color, the type of packaging is the leaf, the natural product color, the spicy taste, and the tuna mackarel price of Rp. 15,000 - Rp. 20,000. The things that are most considered in choosing a fish meatball product are the color of the clear packaging, the type of packaging is plastic, the color of the natural product, the original taste, and the price of the processed fish meatball product <Rp. 10,000. The most important consideration in choosing a pempek product is the color of the clear packaging, the type of packaging is plastic, the color of the natural product, the spicy taste, and the price of the pempek product is Rp. 15,000 - Rp. 20,000.