For the fish-conditioning experiment, 21 circular fiber- glass tanks (3.77 m3; 2 m in diameter and 1.2 m in height) were used. The freshwater parameters of temperature, pH, dissolved oxygen, nitrite, and ammonia were measured daily during the experimental period.
One month before the end of the experiment, a group of 300 female broodstock of 6-month-old goldfish (47.21 ` 2.19 g) from a commercial hatchery was matured for 30 days in a fiberglass tank (2 m3) with the control diet to achieve egg fertilization. The freshwater parameters of temperature, pH, dissolved oxygen, nitrite, and ammonia were measured daily during the 30 days of female maturation.
For the fish-conditioning experiment, 21 circular fiber- glass tanks (3.77 m3; 2 m in diameter and 1.2 m in height) were used. The freshwater parameters of temperature, pH, dissolved oxygen, nitrite, and ammonia were measured daily during the experimental period.One month before the end of the experiment, a group of 300 female broodstock of 6-month-old goldfish (47.21 ` 2.19 g) from a commercial hatchery was matured for 30 days in a fiberglass tank (2 m3) with the control diet to achieve egg fertilization. The freshwater parameters of temperature, pH, dissolved oxygen, nitrite, and ammonia were measured daily during the 30 days of female maturation.
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