Jurnal Sains dan Teknologi Perikanan

Economic Analysis of Added Value and Marketing of Hi-Pro-Ca Amplang Crackers Made from Snakehead Fish (Channa striata) in Teluk Empening Village

Fathan Nabiil Nandana Dhitama — 2026-04-25

This study aims to analyze the added value and marketing system of processed snakehead fish products into amplang crackers in Teluk Empening Village, Terentang District, Kubu Raya Regency, West Kalimantan Province. This study uses a survey method, in which respondents are determined using purposive sampling. This study was conducted in November 2025. The results of the study identified one processed snakehead fish (Channa striata) product, namely Hi-Pro-Ca Amplang Crackers. Based on Hayami's value-added analysis, the cost of raw materials for production is IDR 25.000/kg. This processing generates added value of IDR 141.000/kg. With a value-added ratio of 29,38%, this indicates the financial feasibility of the business. The distribution of returns from the processing of Hi-Pro-Ca Amplang Crackers shows that the largest proportion is allocated to other input contributions at 68,90%, followed by entrepreneur profits at 27,80%, and the remainder as labor income at 3,30%. The high share of other input contributions is due to the intensive use of supporting materials. The marketing system for this product is carried out directly and marketed through several business partners.

Evaluation of the Organoleptic Quality of Fresh Sea Fish Based on SNI 2729:2013 at Legi Songgolangit Market, Ponorogo Regency

Andika David Saputra — 2026-04-25

This study aims to evaluate the freshness level of sea fish sold at Legi Songgolangit Market, Ponorogo Regency. The method used in this study is a survey and interview with a purposive sampling technique. Fish quality assessment refers to SNI 2729: 2013 for five types of fresh fish, namely tuna (Thunnus sp.), mackerel (Scomberomorus commerson), salmon (Oncorhyncus masou), mackerel (Restrelliger sp.), and squid (Loligo sp.), with three samples of each. The parameters observed include the condition of the eyes, gills, meat texture, aroma, and body mucus with a score of 1-9. The results of the study showed that tuna, mamckerel, and salmon experienced a decline in quality with an average organoleptic value of 4-5, while mackerel and squid had a better freshness level with an average value of 8. This shows that the freshness level of fish at Legi Songgolangit Market varies between types of fish, so better post-harvest handling is needed to maintain the quality of fish in traditional markets.

Integrating Advanced Wastewater Treatment and Molecular Tools for Sustainable Water Quality Management in Intensive Aquaculture Systems

Nur Aifiah Binti Ibrahim Ibrahim — 2026-04-25

Aquaculture is a rapidly growing food production sector that supports global food security and livelihoods, but generates nutrient-rich wastewater and relies on chemical treatments that can harm aquatic ecosystems. Conventional water management strategies, such as sedimentation and biofiltration, are often insufficient to address challenges associated with organic loading, nutrient accumulation, and disease outbreaks in intensive and recirculating systems. Advances in molecular tools, including genomics and transcriptomics, enable better monitoring of fish health and environmental stress responses, while emerging treatment technologies, such as microbial bioremediation and membrane filtration, offer potential for nutrient recovery and pollution reduction. Despite these innovations, integration of molecular insights with sustainable water management remains limited. This study aims to develop an integrated approach for improving aquaculture water quality, combining advanced wastewater treatment technologies with molecular tools to enhance environmental sustainability, fish health, and productivity. The findings provide a framework for safer, more efficient, and environmentally responsible aquaculture practices, addressing both ecological and operational challenges in modern intensive systems.

Freshness Level of Tomini Bay Yellowfin (Thunnus albacares) Taludaa Bone Bolango

Wila Rumina Nento — 2026-04-25

The waters of Tomini Bay have considerable potential for fish resources, including tuna. Fresh fish is very susceptible to damage and quality loss, so the commonly applied handling technique to maintain its freshness is to use low temperatures. This study aims to evaluate the quality of yellowfin tuna through organoleptic testing and TVB analysis. Yellowfin samples were taken from whole tuna that had previously undergone organoleptic testing, and then the meat samples were brought to the laboratory for TVB testing. Data analysis was done qualitatively, while laboratory testing was analyzed quantitatively using a non-factorial completely randomized design. The results of organoleptic physical testing of back, belly, and tail samples showed an average score of 8, which includes meat criteria such as brilliant color, good tissue strength, fresh aroma, and a dense, compact, and elastic texture. The results of the TVB test showed that the levels in the stomach and back were 5.80 mg N/100 g and 5.97 mg N/100 g, respectively, while in the tail, they were 5.70 mg N/100 g.

Analysis of the Impact of Harmful Algal Bloom (HAB) on Productivity in The Java Sea Waters

Muhammad Reza Falevi — 2026-04-25

Harmful Algal Bloom (HAB) is an ecological phenomenon that has been increasingly occurring in the Java Sea and has the potential to significantly affect marine productivity. However, studies that integrate multiple HAB triggering factors and their impacts on marine productivity in the Java Sea remain limited and largely fragmented. This study aims to analyze the influence of HAB on marine productivity in the Java Sea through a literature review approach. A total of 20 scientific articles published between 2015 and 2025 were analyzed, consisting of 6 primary articles and 14 supporting articles, with the main focus on coastal areas of the Java Sea. The review results indicate that the primary drivers of HAB occurrence in the Java Sea include increased nutrient concentrations (nitrate and phosphate), changes in oceanographic conditions (temperature, salinity, and current dynamics), and anthropogenic pressures in coastal regions. Dominant HAB-forming phytoplankton species were reported from the Dinoflagellata and Bacillariophyceae groups, which under certain conditions may quantitatively enhance marine productivity; however, this increase is considered pseudo-productivity due to subsequent declines in dissolved oxygen, disruption of food web structures, and elevated risks of toxicity to aquatic organisms. The novelty of this study lies in the integrated synthesis of the relationship between HAB drivers and their implications for marine productivity within the Java Sea. These findings emphasize that increased water fertility does not necessarily correspond to enhanced marine productivity, highlighting the importance of nutrient and coastal activity management to ensure the sustainability of the Java Sea ecosystem.

Moisture Content of Dried (Eucheuma Cottonii) Seaweed In Nunukan Regency

fendi fendi — 2026-04-25

Nunukan Regency is one of the major production centers of Eucheuma cottonii seaweed in North Kalimantan, playing an important role as a supplier of raw materials for carrageenan production and as a contributor to the regional economy. Dried seaweed is the primary traded commodity; however, its quality is highly influenced by moisture content, as this parameter affects market value, susceptibility to fungal growth, and product shelf life. According to the Indonesian National Standard (SNI 2690:2015), the maximum allowable moisture content for dried seaweed is 35%. The traditional sun-drying practices that are still commonly used in Nunukan may result in uneven moisture levels due to fluctuating weather conditions.This study aims to analyze and compare the moisture content of dried Eucheuma cottonii obtained from various cultivation sites in Nunukan Regency and to evaluate its compliance with SNI 2690:2015. The results of this study are expected to provide essential information for farmers and industry stakeholders in improving the quality of dried seaweed products in order to meet domestic and international market standards.

Feed Intake Response of Dumbo Catfish (Clarias gariepinus) to Pelleted Feed Containing 30% Protein

jesika idam kasih zebua — 2026-04-25

The highly profitable freshwater commodity in Indonesia is the dumbo catfish (Clarias gariepinus). In the cultivation process of catfish, feed plays a very significant role, contributing about 70% of all operational costs, with protein as the main component determining the appetite and growth of catfish. This study aims to describe the appetite response of dumbo catfish (Clarias gariepinus) to the provision of 30% protein pellet feed by observing feeding behavior and feed consumption patterns during the rearing period. The research was conducted in an observational manner at the community aquaculture pond in Hilina'a, Gunungsitoli. This study lasted for 2 months from April to May 2025. Fish were fed three times a day, and the feeding response was observed and analyzed descriptively. The results showed that the fish responded well to the feed provided, marked by a high level of enthusiasm during feeding and a stable eating pattern throughout the study period. The controlled environmental conditions also supported the fish's appetite to remain optimal. This research shows that 30% protein pellet feed can stimulate appetite and has the potential to improve the efficiency of catfish farming. Recommendations include the use of 30% protein feed along with good environmental management to achieve optimal and sustainable farming results.

Effectiveness of Tongkol Fish Bone Flour (Auxis rochei) on the Molting Frequency of Freshwater Lobster Seed (Cherax quadricarinatus)

Dian Lestari — 2026-04-27

Freshwater lobsters are one of the fishery commodities that are now widely cultivated because they are rich in nutrients such as biotin, calcium, iron, niacin, phosphorus, protein, vitamins A, B6, and B12. This study aims to determine the effectiveness of skipjack tuna (Auxis rochei) bone meal on the molting frequency of freshwater lobster (Cherax quadricarinatus) fry. This study was conducted in August 2024 at CV. Cova Aquaculture, Tande Timur Village, Banggae Timur Subdistrict, Majene Regency. The test animals used were freshwater lobster fry measuring ±2 cm, aged 1 month, with an average weight of 0.50 g. The feed used was Feng li with a protein content of 40%, combined with tongkol fish bone meal with a protein content of 29.49% and calcium of 12.66%. This study used a completely randomized design with 4 treatments and 3 replicates each, including treatment A with a 0% fish bone meal dose (control), treatment B with a 2% fish bone meal dose, treatment C with a 4% fish bone meal dose, and treatment D with a 6% fish bone meal dose. Data analysis was performed using one-way ANOVA with the assistance of SPSS software. The results showed that the effectiveness of tuna bone meal had a significant effect on the molting frequency of freshwater lobster seeds, but did not have a significant effect on the average absolute weight growth and survival rate. The best molting frequency was obtained in treatment C with a 4% dose of tuna bone meal, which was 1.4%.

Formulation of Local Ingredient-Based Fish Feed Containing 30% Protein Using the Pearson Square Method for Dumbo Catfish (Clarias gariepinus) Culture

Ester laoli — 2026-04-27

Feed formulation is the activity of designing and determining the proportions of various raw materials to meet specific nutritional requirements, particularly the protein content needed by fish or livestock to support growth and maintain health. In local ingredient based formulations, the components used generally come from plant, animal, and agricultural and fishery waste sources that are easily obtained and relatively affordable. This study applies the Pearson Square method in the formulation of artificial feed to achieve a protein content of 30%. Direct observations were then conducted on the fish's feed consumption response and growth parameter analysis to assess fish development during the rearing period. The objective of the study was to produce a locally sourced feed formulation with a 30% protein content for dumbo catfish (Clarias gariepinus) and evaluate its effect on fish response and growth. The results showed that feed formulated with a protein content of 30% provided a good feeding response and supported growth improvement, as indicated by the increase in length and survival rate until the end of the study. The use of local ingredients as a source of protein in this artificial feed is considered to have the potential to reduce production costs and support more efficient and sustainable catfish farming practices.

Changes in Erythrocyte Count of Nilem Carp (Osteochilus vittatus) as an Indicator of Osmoregulatory Response at Various Salinity Levels

Catur Detik Nugroho — 2026-04-27

Penelitian ini bertujuan untuk mengetahui pengaruh variasi salinitas terhadap respon osmoregulasi eritrosit ikan Nilem (Osteochilus vittatus). Perubahan salinitas dapat memengaruhi keseimbangan osmotik ikan, sehingga berdampak pada kestabilan fisiologis dan sistem peredaran darah. Penelitian dilakukan secara eksperimental di laboratorium dengan tiga perlakuan salinitas, yaitu 0, 15, dan 25 ppt, serta tiga waktu pengamatan (0, 30, dan 60 menit). Parameter yang diamati meliputi jumlah eritrosit sebagai indikator kemampuan adaptasi ikan terhadap tekanan osmotik lingkungan. Hasil pengamatan menunjukkan bahwa jumlah eritrosit tertinggi diperoleh pada salinitas 15 ppt dengan waktu pemaparan 60 menit, yaitu sebesar 4,40 × 10⁶ sel/mm³, yang menandakan kondisi salinitas moderat sebagai tingkat optimal bagi kestabilan fisiologis ikan Nilem. Hasil uji ANOVA menunjukkan bahwa faktor salinitas tidak berpengaruh signifikan terhadap jumlah eritrosit (P-Value 0,444), sedangkan faktor waktu menunjukkan pengaruh signifikan (P-Value 0,005). Tidak terdapat interaksi signifikan antara salinitas dan waktu (P-Value 0,657), yang berarti kedua faktor bekerja secara independen. Secara keseluruhan, ikan Nilem mampu beradaptasi terhadap perubahan salinitas dalam rentang penelitian tanpa mengalami gangguan fisiologis yang berarti. Temuan ini memberikan informasi penting mengenai kemampuan osmoregulasi ikan air tawar terhadap perubahan salinitas dan dapat menjadi dasar dalam pengembangan teknik budidaya yang adaptif terhadap kondisi lingkungan perairan.

Efficiency of Tuna Marketing Channels at Kasiwa Fishing Port, Mamuju Regency, West Sulawesi

Femiliani Novitasari — 2026-04-27

This study aims to analyze the distribution patterns, marketing margins, profits, and efficiency of the tuna marketing channel at the Kasiwa Fish Landing Site (PPI) in Mamuju Regency, West Sulawesi. The method used was a descriptive survey employing purposive sampling of 40 respondents, consisting of fishermen, distributors, port market vendors, and retail vendors. Data were analyzed using formulas for marketing margin, marketing profit, marketing efficiency (EPS), and the fisherman’s share. The results indicate six marketing channel patterns: two for tuna and four for baby tuna. For tuna, Channel I (Fishermen → Distributors) generated a margin of Rp17,000/kg with an EPS of 2.5% and a fisherman’s share of 88%, while Channel II (Fishermen → Port Market Vendors) had a margin of Rp10,000/kg with an EPS of 0.12% and a fisherman’s share of 60%. For baby tuna, Channel I has the highest fisherman’s share (45%) and is the most efficient, while the longest channels (Channels II and IV) yield the lowest fisherman’s share (33%). Overall, the marketing channels at PPI Kasiwa are considered efficient because the EPS values in all channels are below 5%. These findings imply the need for policies that encourage the strengthening of short marketing channels, increased direct access for fishermen to distributor traders, and the development of marketing infrastructure at PPI Kasiwa to maximize the share of the price received by fishermen.

Integrative Model of Digital Literacy and Online Platforms to Promote the Economic Resilience of Small-Scale Fishermen in West Sulawesi Province

Ernawaty mappigau — 2026-04-28

Small-scale fishermen face structural challenges such as limited market access, fluctuations in catch prices, and low technological and information capacity. This study aims to analyze the level of digital literacy, the use of online platforms, and their impact on the economic resilience of small-scale fishermen in West Sulawesi, as well as to design an integrative model to strengthen digital capabilities and market access. The method used is a mixed-methods approach involving a survey of 150 fishermen, in-depth interviews, and focus group discussions (FGDs). Quantitative data were analyzed using descriptive statistics and multiple linear regression, while qualitative data were analyzed thematically. The research results indicate that fishermen’s digital literacy remains low to moderate, the utilization of fisheries marketplaces is relatively low, and digital literacy and access to online platforms have not yet significantly impacted fishermen’s economic resilience due to infrastructure limitations, high data plan costs, insufficient guidance, and the dominance of traditional transactions. The study proposes an integrative model that combines the improvement of digital literacy based on fishermen’s needs, the utilization of simple online platforms, and sustainable institutional support to strengthen fishermen’s bargaining power and expand market access.

Analysis of Heavy Metal Pb in Blood Cockle in Lembar Waters, West Lombok

Thoy Batun Citra Rahmadani — 2026-04-28

Heavy metal present in marine water can affect aquatic organisms, particularly bivalves that function as filter feeders and therefore have a high potential to accumulate heavy metals in their bodies. Blood cockle (Anadara granosa) is one of the marine organisms commonly found in the waters of West Lombok, especially in the Lembar area, which is influenced by port activities and coastal community activities. This study aimed to analyze the concentration of lead (Pb) in blood cockles and sediments in the waters around Lembar, West Lombok, and to determine the safe consumption limit of cockles for the community. Samples of blood cockles and sediments were collected from three observation stations in Lembar waters. Each sample was collected in triplicate as replicates. The Pb concentration was analyzed using Atomic Absorption Spectrophotometry (AAS) methods and the results were compared with applicable quality standards. The results showed that the Pb concentration in blood cockles ranged from 0.043–0.051 mg/kg with an average value of 0.047 mg/kg. These values are below the maximum limit set by the government, which is 0.1 mg/kg. Meanwhile, Pb concentrations in sediments ranged from 0.887–1.32 mg/kg and were still below the sediment quality standard of 25 mg/kg. The calculation of the safe consumption limit indicated that the Maximum Tolerable Intake (MTI) of blood cockles ranged from 29-35 kg/week for adults with an average body weight of 60 kg, indicating that blood cockles from the Lembar waters are still safe for consumption.

Analysis of Fresh Cuttlefish Handling Practices and Their Relationship with Product Quality at PT Buana Ikan Nusantara Industri

Kurnia Bislana Afdal — 2026-04-28

Research on the handling of fishery products generally focuses on laboratory-based quality testing, while studies examining handling practices directly within industrial settings and their conformity with standards remain limited. This study aims to analyze the handling practices of fresh cuttlefish at PT Buana Ikan Nusantara Industri and to evaluate their conformity with the Indonesian National Standard (SNI 6926.3:2011) in relation to product quality. The method employed was descriptive observation with an evaluative approach through direct observation and semi-structured interviews conducted during the period of April–July 2025. The analysis was carried out by comparing each stage of the handling process with quality control parameters established in the SNI, including aspects of sanitation, temperature control, freezing, packaging, and storage. The results indicate that most handling stages are in accordance with the SNI provisions, particularly in the processes of washing, arrangement, freezing using Air Blast Freezer (ABF), and frozen storage applying the FIFO system. The observed quality indicators include the sensory condition of raw materials (color, texture, and natural mucus), temperature control, and product stability during storage. However, potential risks were identified in the visually based sorting stage and in the use of chlorine, which requires strict control to prevent residue. These findings demonstrate that conformity with standards and consistency in control at each stage of the process are key factors in maintaining the quality of frozen cuttlefish products. This study contributes an empirical evaluation of the implementation of handling standards in the fish processing industry

Effectiveness of Using Bioball and Pumice Biofiltration on Water Quality in Recirculating Tilapia Cultivation System

Rizky Kusma Pratiwi — 2026-04-28

The use of simple filter media can reduce organic waste materials in Nile tilapia aquaculture systems. The performance of biofilters is strongly influenced by the type of media used, depending on their characteristics in supporting biofilm formation. This study aimed to analyze the effectiveness of bioball and pumice as biofilter media on water quality and the growth performance of Nile tilapia (Oreochromis niloticus) in a recirculating aquaculture system. The research was conducted from October to November 2024 at the Integrated Farming Laboratory, PSDKU Universitas Brawijaya Kediri, using an experimental method. Two treatments were applied, namely bioball (P1) and pumice (P2), with observations on water quality parameters including temperature, pH, dissolved oxygen (DO), Total Organic Matter (TOM), alkalinity, ammonia, nitrate, and phosphate, as well as fish growth parameters including absolute growth, specific growth rate (SGR), and survival rate (SR). Data were analyzed using the Independent Sample T-Test, while alkalinity, absolute growth, and survival rate were analyzed using the non-parametric Mann–Whitney U test. The results showed that the use of biofilter media did not have a significant effect (p>0.05) on all water quality parameters, but showed a significant difference in absolute growth. Pumice media demonstrated better performance in increasing DO (5.6–10.3 mg/L) and reducing organic matter with a removal efficiency of 33–70% and ammonia up to 94%. In terms of growth performance, the pumice treatment produced higher values of absolute growth (2.52 ± 0.26 g), SGR (2.53 ± 0.18%/day), and SR (86.7 ± 4.7%) compared to bioball. Therefore, pumice has the potential to be recommended as a promising biofilter medium for improving water quality and growth performance of Nile tilapia in recirculating aquaculture systems.