DHA is a polyunsaturated fatty acid that is one of the main components of the brain and eyes and plays an important role in nervous system and cognitive function. Fish oil is extracted from deep-sea fish, while algal oil is extracted from Marine microalgae.

What is DHA Fish Oil & DHA Algal oil?
DHA Algal oil: DHA, docosahexaenoic acid, is a very important polyunsaturated fatty acid for the human body and belongs to the important member of the Omega-3 unsaturated fatty acid family. DHA is a major element for the growth and maintenance of nervous system cells, and is an important component of the brain and retina. It is with  up to 20% content of in the human cerebral cortex and the largest proportion in the retina of the eye. It is essential for the infant's intellectual and visual development. DHA algal oil is extracted from Marine microalgae not passed through the food chain, is relatively safe, and its EPA content is very low.
DHA Fish oil： Fish oil, an oil derived from fatty fish, is rich in eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA, commonly known as brain gold) and multiple n-3 polyunsaturated fatty acids (n-3PUFA).

Effects on the Human Body
DHA Algal oil:
1.Brain health: DHA is thought to be very beneficial for brain health. It is a structural component of the brain's neurons and helps maintain their health and normal function. Therefore, getting enough DHA may help improve memory, attention, and cognitive function
2.Vision protection: DHA is also essential for retinal health. It is one of the main components of the retina, helping to maintain visual function and protect the eye from some eye diseases.
3.Cardiovascular health: Omega-3 fatty acids are thought to be beneficial for cardiovascular health. DHA intake is strongly linked to heart health and helps reduce the risk of cardiovascular disease, including lowering triglyceride levels in the blood and reducing the development of atherosclerosis.
4.Anti-inflammatory effects: DHA has anti-inflammatory properties that reduce the inflammatory response in the body. It helps Human to reduce the symptoms of inflammatory diseases such as arthritis.
Overall, DHA fish oil is essential for maintaining brain, vision, and cardiovascular health and is a very beneficial nutritional supplement.
DHA Algal oil

1.Promotes brain development and function: Algal DHA is an important component of the brain and nervous system, especially during fetuses and infants. DHA is essential for brain development. Adequate intake of DHA helps to improve cognitive function, memory and learning ability, and it has a positive impact on the intellectual development of children and adolescents.
2.Maintenance of cardiovascular health: Algal DHA can reduce triglyceride levels, reduce platelet aggregation, reduce blood viscosity, and help prevent cardiovascular disease. Long-term intake of algal DHA can help protect cardiovascular health by reducing the risk of heart attack and stroke.
3.Maintenance of visual health: algal DHA is one of the main structural components of the retina and plays an important role in maintaining visual health. Getting enough algal DHA can reduce the risk of vision loss due to eye diseases such as age-related macular degeneration.
4.Anti-inflammatory and immunomodulatory: algal DHA has anti-inflammatory effects that can regulate the inflammatory response and reduce the symptoms of inflammatory diseases. In addition, DHA can also regulate the function of the immune system, enhance the body's immunity, and help prevent infection and autoimmune diseases.
5.Improved mood and mental health: Some studies have shown that DHA also has a positive effect on mood and mental health. Adequate DHA intake can improve emotional stability and reduce the occurrence of depression and anxiety.

In summary, DHA algal oil is important for the brain, cardiovascular, visual, immune system, as well as emotional and mental health.

Difference from Fish oil & Algel oil
1. Fish is at the top of the Marine food chain. Its body is easy to gather heavy metals and other toxic pollutants. Compared with the fish source DHA, DHA extracted from seaweed is with less pollutants,and more pure.
2. Fish source DHA can not completely remove the EPA contained in fish  during the extraction process. Some scientists believe that EPA may induce early puberty in children. Therefore, Algel oil with high DHA content is more suitable for children and teenagers to eat, and is safer.
3.High purity: DHA algal oil usually undergoes a fine extraction and purification process to ensure high purity and concentration of DHA. This makes it an effective DHA supplement that users can control their intake more easily.
4.Algal Oil is suitable for vegetarians since DHA algal oil is of plant origin, it is suitable for vegetarians and those who wish to obtain DHA from plant sources

Price Variations
Algal oil DHA is mainly extracted from algal, and fish oil is a fish oil component extracted from deep-sea fish. Because there are fewer sources of algal oil DHA, the price of algal oil DHA is relatively high.