Disadvantages in Fish Farming

Top 10 Fish Farming Pros & Cons – Summary List

Fish are an important part of a healthy, well-balanced diet. They provide a good source of protein and vitamins, and are a primary dietary source of heart-healthy omega-3 fatty acids. Omega-3 fatty acids can: lower risk of heart disease.

• Disease. Keeping fish in close proximity increases the chances of disease.
• Environment. Fish farms can have a harmful effect on the local environment.
• Protein Efficiency. Many farmed fish–such as salmon, bass and cod–are carnivorous.
• Set-up Costs.
• Worker Safety.

1) Fisheries help to meet the demand of consuming fish of the growing population. 2) It helps to make the fish available at cheaper rates 3) Fisheries provide a source of livelihood for several people. 4) Many varieties of fish, not easily captured in nature, can be cultured in culture fisheries.

Disadvantages of a Fishing Trip

• Overfishing.
• Endangered species.
• Incorrect fishing methods.
• Littering.
• Some people claim that fishing is cruel.
• Fishes may get injured during the catching process.
• Fishing may pose some dangers.
• Excessive chumming of fish may lead to eutrophication.

Government dietary guidelines recommend that people eat fish twice a week. “For most individuals it’s fine to eat fish every day,” says Eric Rimm, professor of epidemiology and nutrition, in an August 30, 2015 article on Today.com, adding that “it’s certainly better to eat fish every day than to eat beef every day.”

Here are the five most detrimental fishing practices affecting the underwater world today, and some thoughts on what we can do to stop it.

1. Overfishing. This term refers to the practice of catching fish faster than they are able to reproduce.
2. Bycatch.
3. Damage to the ocean floor.
4. Managing Fishing.
5. Illegal Fishing.

The most common negative environmental impacts that have been associated with aquaculture include: waters eutrophication, water quality, alteration or destruction of natural habitats; introduction and transmission of aquatic animal diseases (FAO, 2006a).

Over-fishing can result in the over-exploitation of marine ecosystem services. Fishing can cause several negative physiological and psychological effects for fish populations including: increased stress levels and bodily injuries resulting from lodged fish hooks.

The main negative impacts attributed to the activity are as follows.

• (1) Destruction of Natural Ecosystems, In Particular Mangrove Forests to Construct Aquaculture Farms [4, 10, 11] —
• (2) Salinization/Acidification of Soils —
• (3) Pollution of Water for Human Consumption —

Negative Environmental Impacts of Aquaculture

• Nutrient build-up.
• Transmission of disease.
• Antibiotics.
• Energy Usage in Feed Production.
• Use of freshwater resources.
• Destruction of mangrove forests.
• Acidification of soils.
• Pollution of drinking water.

Eutrophication is one of the biggest threats, causing algal blooms and affecting ecosystems, including fish species. Faeces and uneaten food pellets from fish farms alter the organic matter in the sediment, which can change the consumption of oxygen and cause local eutrophication.

Along with the positive aspects of aquaculture come some negative ones. Fish farms can impact wild fish populations by transferring disease and parasites to migrating fish. Aquaculture can also pollute water systems with excess nutrients and fecal matter due to the large numbers and concentrations of farmed fish.

The primary potential sources of negative economic impacts from mariculture include: (1) discharge of effluents that may contain problematic levels of nutrients, antibiotics, or nonnative species; (2) spread of diseases; (3) use of high levels of fish meal in the diets fed to the species cultured; (4) clearing …

Pollution: The farming of marine fish, crustaceans and even bivalves produces waste in the form of fecal matter and unused feed. These largely nitrogen-based wastes can cause oxygen depletion in coastal environments and a net loss of marine productivity in certain coastal areas.

Catfish aquaculture and beef produce about 20 times more greenhouse gases than farmed mollusks, small capture fisheries, farmed salmon and chicken. Mollusk aquaculture — such as oysters, mussels and scallops — actually absorb excess nutrients that are harmful to ecosystems.

Bottom line: in general, seafood tends to be on the lower end of the carbon scale, on par with more carbon-friendly types of meat such as chicken.