Batbitim marine conservation area (MCA) of Misool, Raja Ampat has been set as an area that is prohibited for fishing activities since 2005. The only activities allowed in that area are tourism and research activities. The difference in the management status between area inside the Batbitim MCA and outside the MCA might affect ecosystem components such as fish and coral reef in the respective area. The present study aims to investigate the ecological status of target fishes in the two areas. Data were collected by using an underwater visual census at 5 sites, in which at each site 3 transects were placed. Collected data are then used to assess ecological indices for the target fishes. It is found that there were 38 species of target fish belonging to 13 families. The diversity index of Shannon was found to be in the range between 0.99 (inside MCA) to 1.67 (outside MCA) and dominance index ranged between 0.26 (outside MCA) and 0.61(inside MCA). The abundance of individual target fish in each location varies between 960 ind ha−1 (outside MCA) and 9413 ind.ha−1 (inside MCA). Those results indicate that there is a discrepancy between the ecological status of the target fish at locations inside and outside the MCA.

Arfak rainbow fish, Melanotaenia arfakensis is an endemic fish on several river systems in the northeastern part of the Vogelkop peninsula. This study aims to describe the growth, age at first maturity, and sexual dimorphism of this endemic fish on the Nimbai Stream and the Aimasi Stream, the Prafi River system. The fish were caught using handnet, then were measured their standard length and individual weight. Data were analyzed to estimated growth patterns, von Bertalanffy's growth rate, age at first maturity and sexual dimorphism characteristics. The results showed that male growth patterns varied, with a tendency of the increase in body length faster than that of body weight (negative allometric patterns) with b values ranging from 2.886 to 3.132. On the other hand, the female individuals had positive allometric patterns (b values ranged from 3.062 to 3.378). The growth rate (K) of male body length was faster (0.165-0.174) than that of female individuals (0.159-0.163). Male individuals reached the first maturity condition earlier (at age of 1.83-2.18 years) than female individuals (at age of 2.49-2.64 years). Sexual characteristics between the sexes are related to body height starting to appear when fish are of a standard length of larger than 18.22 mm or when male fish begin to approach the time of the first sexual maturity. Understanding of growth, age, and the characteristics of the sexual dimorphism of endemic fish has an important meaning in monitoring population conditions and for conservation efforts in their natural habitat.

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The waters of South Sorong have potential shrimp resources, including abundant banana shrimp (Penaeus merguiensis de Man, 1888). This study aims to obtain information about the morphometric characteristics and growth of banana shrimp in the fishing area around the waters of Kampung Bakoi, South Sorong Regency, West Papua Province. Data collections were carried out in June and October 2019 using descriptive methods with direct observation techniques. Based on the results of data analysis, it was found that the total length of shrimp caught in Bakoi Village was in the range of 10 - 26.8 cm and the most were caught measuring 15.2 cm to 16.4 cm. The model of the relationship between length and weight of banana shrimp in Bakoi Village follows the equation Log W= 1,630+2,659 Log (L) or the form of negative allometric growth. Analysis of the relationship between total length (Y) and carapace length (X) (including rostrum) and the relationship between total length and carapace length (Z) (excluding rostrum) obtained the best estimator models, each following the logarithmic equations L = -2,188 + 10,226 Ln(PK) and L = 4,439 + 9,201 Ln(PKt) respectively.

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<p><em>T</em><em>raditional use zones (TUZ) of Misool </em><em>is located </em><em>within the marine protected area</em><em> of Misool which has high marine biodiversity, especially coral and reef fish. </em><em>Regulating the use of fishing gears in</em><em> TUZ of Misool</em><em>,it is essential to ensure the sustainability of </em><em>marine</em><em> ecosystems and fisheries in the region. The  objective of this study isto determine the suitability of fishing gear inthe depth zone of less than 50 m and more than 50 m in Misool TUZ, Raja Ampat. </em><em>The fishing gear suitability was assessed based on bioecological, social, and legal aspects. </em><em>The method used in this research was analytic hierarchy process (AHP) whichderivesthe priorities</em><em>for </em><em>criteria and alternative fishing gear using expert judgment. The results of the analysis showed that fishing gear</em><em>s</em><em> that wasmost appropriate </em><em>to be </em><em>operated in the zone which has thewater depth of less than 50 m was handline.  T</em><em>he most </em><em>decisive criteria for thiswasthat the fishing gear was undestructive to coral reef ecosystem and seagrass ecosystem. In addition,</em><em>fishing gears that were suitable in</em><em>the zone with depth </em><em>more</em><em> than 50 m were trolline and handline</em><em>, </em><em>and </em><em>the most </em><em>decisive criteria wasthe availability of fish target and not causing conflict between fishermen. On the other hand gillnet and liftnet had a low compatibility to be used in both zones.</em><em></em></p><p><strong><em>Keywords:</em></strong><strong><em>   </em></strong><em>Analytic hierarchy process</em><em>, marine protected area,</em><em>Misool Raja Ampat</em><em>,</em><em>suitability of fishing gear, </em><em>t</em><em>raditional use zones </em></p><p align="center"><strong>ABSTRAK</strong></p><p class="Abstrakisi">Zona pemanfaatan tradisional (ZPT) Misool terletak di dalam kawasan lindung laut Misool yang memiliki keanekaragaman hayati laut yang tinggi, terutama ikan dan terumbu karang. Oleh karena itu,pengaturan penggunaan alat tangkap ikan di ZPT Misool sangat penting untuk menjamin keberlanjutan ekosistem laut dan perikanan di wilayah ini. Penelitian ini bertujuan untuk mengetahui kesesuaian alat tangkap untuk dioperasikan di zona perairan pada kedalaman kurang dari 50 m dan lebih dari 50 m di ZPT Misool, Raja Ampat. Kesesuaian alat penangkapan ikan dinilai berdasarkan aspek bioekologi, sosial dan legal. Metode yang digunakan dalam penelitian ini adalah metode <em>Analytical Hierarchy Process</em> (AHP) dengan pembobotan terhadap kriteria dan alternatif alat tangkap menggunakan penilaian pakar. Hasil analisis menunjukkan bahwa alat tangkap yang paling sesuai digunakan di zona perairan pada kedalaman kurang dari 50 m adalah pancing ulur, dengan kriteria yang paling menentukan adalah tidak merusak ekosistem terumbu karang dan ekosistem padang lamun. Kemudian pada zona perairan pada kedalaman lebih dari 50 m, alat tangkap yang sesuai digunakan adalah pancing tonda dan pancing ulur, dengan kriteria yang paling menentukan adalah ketersediaan target ikan dan tidak menimbulkan konflik antara nelayan. Alat tangkap jarring insang dan bagan perahu memiliki kesesuain yang rendah untuk digunakan dikedua zona.</p><strong>Kata kunci:</strong>          <em>Analytical Hierarchy Process,</em>kesesuaian alat tangkap, zona pemanfaatan tradisional, <em>Marine Protected Area</em><em>, </em>Misool Raja Ampat

Indonesia has a wide variety of fish resources and one of them is yellowfin tuna. Tuna in Palabuhanratu is caught by Tonda and swamp tuna. Tuna is an export commodity that causes an increase in catches and requires proper management of fish resources. One of the information needed in fisheries management is the relationship between weight-length and fish condition factors. The purpose of this study is to determine growth pattern and factors of yellowfin tuna conditions landed at Palabuhanratu Fishing Port. The study was conducted in Palabuhanratu from September 2021 to January 2022. Data collection was carried out at the fish landing site at Palabuhanratu Fishing Port. The data collected in this study consisted of primary data and secondary data. Primary data consist of data on the length and weight of the fish. As many as 200 yellowfin tuna was measured their total length and weight. The total lengths of the measured tuna ranged from 30.9 - 101.9 cm. The growth pattern model analysis showed b value of 2.7. This indicates that yellowfin tuna in the study area had a negative allometric growth pattern (b<3), which explains  that the length gained was faster than the weight gained.  Tthe condition factor of the yellowfin tuna fish ranged from 0.70 – 1.54, with an average of 1.0. The condition factor is influenced by the availability of food because Indian Ocean is available with sufficient food because the Indian Ocean is famous for its upwelling area.

Ikan layang (Decapterus spp) merupakan komponen utama dari sumberdaya ikan pelagis kecil yang sering tertangkap oleh nelayan bagan perahu di perairan Teluk Doreri, namun belum diketahui secara pasti jenis-jenis ikan layang (Decapterus spp) yang tertangkap oleh nelayan bagan perahu di perairan ini, sehingga dapat berakibat terhadap jenis-jenis ikan layang (Decapterus spp) secara spesies, jika tidak dapat dikelola secara berkelanjutan, sedangkan informasi ini sangat perlu diketahui untuk menunjang pengelolaan jenis-jenis ikan layang (Decapterus spp) perairan laut Teluk Doreri Kabupaten Manokwari dalam rangka pengelolaan perikanan tangkap secara berkelanjutan dan terpadu. Untuk itu, tujuan dari penelitian ini adalah mengetahui jenis-jenis ikan layang yang tertangkap oleh nelayan bagan di Teluk Doreri, Kabupaten Manokwari, Provinsi Papua Barat. Penelitian ini dilakukan selama 7 hari di bulan April 2019. Metode yang digunakan dalam penelitian ini adalah metode observasi langsung. Survei dilakukan pada 6 bagan nelayan yang melakukan operasi penangkapan di perairan Teluk Doreri. Analisis data yang digunakan dalam penelitian ini yaitu analisis deskriptif. Berdasarkan hasil yang didapatkan, nelayan biasanya melakukan operasi peangkapan pada 2 lokasi penangkapan, yaitu belakang Pulau Mansinam dan sekitar perairan Anday, dimana ke 2 lokasi ini merupakan target Fishing ground nelayan bagan. Hasil identifikasi jenis-jenis ikan layang menunjukan bahwa, dari 6 bagan nelayan yang melakukan penangkapan ikan layang, ditemukan 3 jenis ikan layang (Decapterus spp) yang sering tertangkap oleh bagan nelayan di sekitar perairan Teluk Doreri, yaitu jenis Decapterus macarellus, Decapterus akaadsi dan Decapterus macrosoma. Diperlukan kajian lebih lanjut dalam menunjang prospek perikanan ikan layang di Teluk Doreri, Kabupaten Manokwari, Provinsi Papua Barat, Indonesia.