Question

1. What is "Brown Blood" disease in fish
2. What is the cause of brown blood disease

Answer 1

Answer: brown blood is a condition in which the fish is poisoned by nitrate

Explanation: it can be caused by high nitrate levels

Answer 2

Nitrite poisoning commonly called "brown blood" disease is an environmental condition that affects a number of fish species cultured for food today including channel catfish. Its cause is elevated levels of nitrite in the pond or culture system water.