Is fish meal fit for human consumption?5 answersFish meal is fit for human consumption as it provides great nutritional value at an affordable price. It is enriched with high-quality protein, essential amino acids, omega-3 fatty acids, vitamins, and minerals, which are all beneficial for human health. However, reducing the dependency on fish meal in aquafeeds is important for the sustainable growth of aquaculture. Efforts are being made to replace fish meal with alternative feedstuffs without affecting fish performance and fillet quality. Fish meal made from fisheries by-products can be utilized as long as the fish used are not caught for feed purposes. Additionally, meals containing waste from fish processing, such as tilapia, tuna, salmon, and sardine, have been characterized and found to have high protein content and nutritional value, making them suitable for human consumption. Therefore, fish meal can be a valuable source of nutrition for humans, but it is important to consider sustainable practices and alternative feed options in aquaculture.
What are the nutritional benefits of fish?5 answersFish is a highly nutritious food that provides several health benefits. It is a rich source of high-quality protein, essential amino acids, vitamins (both fat and water-soluble), and minerals such as iodine, calcium, magnesium, phosphorus, selenium, iron, and zinc. Fish is particularly known for its high content of polyunsaturated fatty acids (PUFAs), especially omega-3 and omega-6, which have preventive effects on cardiovascular diseases, autoimmune disorders, and high blood pressure. These fatty acids also play a crucial role in brain development, maintaining healthy cell membranes, and reducing inflammation. Additionally, fish consumption has been associated with anticancer properties, reduced blood cholesterol levels, and improved cardiovascular health. The minerals and vitamins present in fish contribute to various health benefits, including improved immune function, bone health, and prevention of anemia and skin-related diseases. Overall, incorporating fish into the diet can provide essential nutrients and promote overall health and well-being.
How to describe the sounds produced by a fish?5 answersFish produce sounds using various mechanisms such as vibrating swimbladders, rubbing bony elements, or stridulation. Sonic muscles, which are among the fastest muscles in vertebrates, are responsible for driving the swimbladder to produce sound. These muscles can be either extrinsic, extending from the head to the swimbladder, or intrinsic, attaching exclusively to the bladder wall. Some fish species also use slow muscles that stretch the swimbladder and associated tendons, allowing sound production by rebound. The swimbladder sounds are driven as a forced response rather than a resonant one, which explains the broad tuning, rapid damping, and directionality of fish sounds. Stridulation sounds, produced by rubbing a ribbed process against a rough surface or rapid jaw closing mediated by a specialized tendon, have been observed in catfishes and damselfishes. Fish sound production has evolved independently multiple times, as indicated by a cladogram of sonic fishes.
How can we add value to fish products?5 answersValue can be added to fish products through various methods. One approach is to develop marine-based food products with added value, using low commercial value fish species and unexploited species. These products can be created through innovation and reformulation, and consumer acceptance of these products has been observed in sensory evaluations. Another method is through value addition in the form of improved market forms, such as chilled and frozen fish styles, which reduce the time required for further preparation of the product. Additionally, the development of values-based supply chains for fish and fish products can add value by incorporating environmental, social, cultural, or ethical values based on sustainable resource use. Furthermore, the creation of functional, enriched, and specialized fish-based food products, including those for athletes, can add value to the fish industry. Finally, the addition of micronutrient additives and the use of vegetable raw materials can enhance the nutritional value and quality of fish products.
What is marine fish in Sorsogon?5 answersMarine fish in Sorsogon Bay include a variety of species. A study by Dumilag et al. found that the traditional fishing practice in Bulusan, Sorsogon, uses nine seaweed fish bait taxa, including Acanthophora spicifera, Eucheuma denticulatum, and Gracilaria gigas. Another study by Nieves et al. assessed commercially important marine crabs in San Miguel Bay and Sorsogon Bay, including blue crab (Portunus pelagicus), Christian crab (Charybdis feriata), three-spotted crab (Portunus sanguinolentus), and mud crab (Scylla serrata). Malto and Dumilag documented fish species vended in Magallanes markets, with a total of 77 species identified, including 13 new records for Sorsogon Bay. Dumilag et al. also studied the marine algal flora of eastern Sorsogon and found that the number of ulvophycean species recorded in the area is the highest in the Philippines. Additionally, Malto and Mendoza evaluated the occurrence of microplastics in Sorsogon Bay and found that they were present in surface waters, the water column, and bivalves such as Perna viridis and Atrina pectinata.
What is fish ball?1 answersFish ball is a popular food in southern China and Chinese communities. It is made by pounding fish to create a smooth texture, unlike European meatballs which are ground. Fish balls can be made at home using a fish ball machine, but the current machines are large and expensive, making them unsuitable for household use. Fish balls are typically made from fish mince powder supplemented with other ingredients like potato flour. The percentage of fish mince powder used affects the protein, fat, carbohydrate, and moisture content of the fish balls. The flavor and overall acceptability of fish balls also vary based on the percentage of fish mince powder used. Set fish ball is another type of fish ball popular in Southeast Asian countries. Oversetting of set fish ball during storage can be reduced by using encapsulated citric acid and glucono-delta-lactone. Acetic acid, glucono-delta-lactone, and chitosan can be used to inhibit microbial growth in set fish balls. The density of fish ball paste affects its ability to float or sink in water. Factors such as moisture content, temperature, and salt concentration can influence the density of fish ball paste. Fluorescence in situ hybridization (FISH) is a molecular cytogenetic method used to detect specific nucleic acid sequences within cells. FISH is widely used in prenatal diagnosis, tumor detection, and infection detection due to its speed, safety, high sensitivity, and ease of use.