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Fish when imported to the pond often lose a lot due to:

- Construction during transportation.

 Stress due to changing living environment.

- Easy to get bacteria and fungi to enter the body.

- Internal parasites disease on snakehead fish caused by hookworm, roundworm, tapeworm parasitizing in fish intestine.

Scientists have not identified the cause of the disease, but only diagnosed the following factors: (1) Fish nutritional imbalance; (2) the stocking density is too thick; (3) End-feeding for a long time continuously; (4) The pond water environment is polluted, there are many environmental toxins, heavy metal contamination and chemical residues; (5) Use antibiotic treatment continuously.

White spots in the internal organs disease of snakehead caused by Aeromonas schubertii bacteria.