(i) Infectious Salmon Anemia (ISA) – This is a viral disease of Atlantic salmon caused by Salmon isavirus that causes severe losses to infected farms.
(ii) Risk of parasites e.g. sea lice.
(iii) Fish predators like hawks and snakes also cause a lot of damage to fish farming.
(iv) Polluting the water with chemicals – when it rains water washes some of the chemicals into nearby streams, rivers, ponds, and lakes
(v) Polluting the water with industrial effluents – these effluents pollute the water and the fish in it.
Responses