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Philippine aquaculture is hampered by the lack of a "trash fish" — a cheap fish that can be used to feed farmed fish — as most fish in the Philippines are directly valuable for human consumption. This increases the cost of farming carnivorous fish. Another common impediment is access to juveniles, for fish, crabs, and shrimp.
Rice-duck farming is the polycultural practice of raising ducks and rice on the same land. It has existed in different forms for centuries in Asian countries including China, Indonesia, and the Philippines, sometimes also involving fish .
The Philippines lies within the Coral Triangle, and one area, the Verde Island Passage, has the world's highest recorded diversity of marine species. [5]: 8 Reef fish provide between 15 and 30% of municipal fisheries catch, [6]: 65 with some islands relying on reefs for as much as 70% of their catch.
Aquaculture in the Philippines (which includes fish, shellfish, and seaweed farming) comprises 39% of the country's fisheries sector. The rest of the fisheries sector is composed of commercial and municipal fishing. [59] Some of the more common aquaculture products in the Philippines are bangus, tilapia, catfish and mudfish, and prawns. [59]
Their ability to generate positive spillover effects, increasing fish stocks in the surrounding water, is also recognized by some communities. Some protected areas can also provide alternative livelihoods through ecotourism. [59] Many MPAs in the Philippines include both a core no-take area, and a surrounding area with regulated activities.
Tertia salt had the most impurities and was darkest in color. This salt was used with dry ice to preserve ice cream. Segunda salt was used to preserve fresh fish. The wholesale seafood trading communities in Navotas and Malabon were the main buyers of segunda salt. But Las Piñas was most known for its primera or first class salt which is ...
Sustainable fish farming practices do not use dangerous chemicals, hormones, or antibiotics on their fish, which benefits the surrounding marine environment, and the human consumers themselves. In addition to this, sustainable fish farming is able to control what their fish eat: farmers will take care to keep the fish's diet healthy and balanced.
The aquaculture or farming of piscivorous fish, like salmon, does not help the problem because they need to eat products from other fish, such as fish meal and fish oil. Studies have shown that salmon farming has major negative impacts on wild salmon, as well as the forage fish that need to be caught to feed them.