Asian Journal of Fisheries and Aquatic Research <p style="text-align: justify;"><strong>Asian Journal of Fisheries and Aquatic Research</strong> aims to publish high quality papers (<a href="/index.php/AJFAR/general-guideline-for-authors">Click here for Types of paper</a>) on all areas of aquatic research. This journal facilitates the research and wishes to publish papers as long as they are technically correct, scientifically motivated. The journal also encourages the submission of useful reports of negative results. This is a quality controlled, OPEN peer reviewed, open access INTERNATIONAL journal.</p> Asian Journal of Fisheries and Aquatic Research en-US Asian Journal of Fisheries and Aquatic Research Toxicity Effects of Brown Dried Pawpaw (Carica papaya) Leaf Extract to Fingerlings of African Catfish Clarias gariepinus <p>The acute and sub-lethal bioassay of aqueous extract of fresh pawpaw (<em>Carica papaya</em>) leaf on <em>Clarias gariepinus </em>fingerlings was investigated. The experiment was carried out at Department of Fisheries Teaching and Research Fish Farm, Modibbo Adama University of Technology Yola. At 96h static bioassay, symptoms of toxicity in the fish indicated that aqueous extract of fresh pawpaw leaf caused sub-acute effects such as altering fish behavior. These behaviors include air gulping, erratic swimming, discoloration, loss of reflex and skin peeling. These behavioral alterations were time and concentration dependent. Exposure to aqueous extract of fresh pawpaw leaf caused decrease in packed cells volume (PCV), haemoglobin (Hb), and red blood cell (RBC), mean corpuscular haemoglobin concentration (MCHC) and an increase in the mean corpuscular haemoglobin (MCH) and mean corpuscular volume (MCV). It resulted in marked increase in white blood cells (WBC). Mortalities and LC<sub>50</sub>-96h values for <em>Clarias gariepinus </em>exposed to fresh pawpaw leaf extract was (10.9 ml/l). The mortality rates in extracts to <em>Clarias gariepinus </em>in sub-lethal exposure was lower than in acute concentrations. The growth rates were significantly reduced in fish exposed to sub-lethal concentrations of the fresh pawpaw leaf extract compared to the control fish (p&lt;0.05).</p> A. H. Ishaku A. I. Jauro Y. M. Gadaka A. Yagana R. A. Mohammed S. Usman W. Chinda ##submission.copyrightStatement## 2019-09-07 2019-09-07 1 8 Water Quality Distribution in Situ Gunung Putri Bogor Regency, Indonesia <p>The purpose of this study was to determine water quality distribution in Situ Gunung Putri. This research was conducted from February to March 2019, carried out in Situ Gunung Putri and at the Limnology Research Center of the Indonesian Institute of Sciences, both located in Bogor, West Java. The method used was the survey method. The results showed that, at the surface level, the temperature ranged between (28.14±0.52 and 30.61±1.76)°C, transparency between (0.38±0.12 and 0.65±0.06) m, dissolved oxygen (DO) was between 1.92±1.10 and 5.7± 2.55 mg / L, chemical oxygen demand (COD) was between 42.22±9.86 and 54.09±15.89, nitrate between (0.047±0.009 and 0.05±0.015) mg / L, phosphate of (0.015±0.002 and 0.022± 0.004) mg / L and pH was between 7.11± 0.27 and 7.33 ±0.34. Meanwhile at the Secchi depth values of the temperature ranged between (2.93±0.71 and 29.96 ±1.71)°C, DO was 1.14 ±0.90 and 3.37±1.63&nbsp; mg / L, nitrate was 0.045±0.008 and 0.056±0.019 mg / L, phosphate was 0.016±0.003 and 0.035± 0.043 mg / L and pH was between 6.68± 0.33 and 7.11 ±0.28.&nbsp; Based on these values water quality parameters except COD in&nbsp; Situ Gunung Putri is still at the optimal range&nbsp; for aquatic organisms.</p> Zahidah Hasan Thoriq Ilham Yuli Andriani Heti Herawati Fachmijany Sulawesty ##submission.copyrightStatement## 2019-09-12 2019-09-12 1 8 Structure of Macrozoobenthos (Gastropods) Community in Mangrove Forest Ecotourism Pandansari Kabupaten Brebes, Central Java <p><strong>Aims: </strong>This research aimed to analyze the abudance and diversity of macrozoobenthos in the Gastropod Class in the Ecotourism Waters of Pandansari Mangrove Forest, Brebes Regency, Central Java.</p> <p><strong>Study Design:</strong> The research was conducted by survey.</p> <p><strong>Place and Duration of Study:</strong> This research was carried out for 3 months between December 2018 until February 2019 in Ecotourism Forest Areas in Bakau Pandansari, Brebes Regency, Central Java.</p> <p><strong>Methodology:</strong> The method used in this research was survey methods using primary data in the form of physical chemistry of aquatic data, gastropod abundance, diversity index, equitability index. Data collection techniques using purposive sampling in determining 3 stations and 3 repetitions. Data analysis in this research used descriptive statistics.</p> <p><strong>Results:</strong> Research results found 9 species of Gastropods inhabiting the mangrove ecosystem, namely <em>Casidulla aurisfelis, Cerithidea </em>sp<em>, Cerithidea alata, Cerithidea cingulata, Cerithidea obtusa, Polinices </em>sp<em>, Puperita </em>sp<em>, Telescopium telescopium </em>and<em> Turiculla nellial-suprius.</em> Gastropod abundance ranged from 67 - 166 ind / m2. Gastropod diversity index in the medium category 2 &lt;H’ ≤ 3. Uniformity values ranged from 0.79 to 0.81 with a high category. The relationship between water quality and gastropods had an R2 value of 97%, water quality can affect gastropod life and as much as 3% is influenced by other factors.</p> <p><strong>Conclusion:</strong> Based on the results of this research that has been done, it can be concluded that in general environmental parameters in the Pandansari mangroves are still favorable in supporting the survival of the gastropods inhabiting them.</p> Natasya Natalia Sinaga Heti Herawati Herman Hamdani Asep Sahidin ##submission.copyrightStatement## 2019-09-13 2019-09-13 1 6 A Short Review on the Halotolerant Green Microalga Asteromonas gracilis Artari with Emphasis on Its Uses <p>The halotolerant green single-celled <em>Asteromonas gracilis</em> isolated from the hypersaline saltern ponds of Messolonghi, Greece, was kept in laboratory cultures, grown effectively at various salinities and used for feeding rotifers, protozoa, copepods and <em>Artemia</em> sp. In all feeding trials all filter feeders accepted <em>A. gracilis</em> and grew. Additionally, as of its morphology, movement and culture reliability <em>Asteromonas</em> is a valuable teaching tool for phycological studies, supreme to the other usual microalgae for this purpose. The exploitation potential of <em>A. gracilis</em> in many sectors awaits research results, as literature data are scarce.</p> George N. Hotos ##submission.copyrightStatement## 2019-09-04 2019-09-04 1 8