Màu sắc bể nuôi – yếu tố quan trọng ảnh hưởng đến sinh trưởng, tỷ lệ sống và màu sắc của cá khoang cổ đỏ (<i>Amphiprion frenatus</i>)

Abstract

The tank color is a critical environmental factor influencing growth, metamorphosis, survival rate, and skin coloration quality in fish. This study aimed to evaluate the effects of tank color (blue, white, transparent, red, black) on growth performance, metamorphosis, survival rate, and total carotenoids accumulation (TCA) in the larvae of the tomato clownfish (Amphiprion frenatus). The results showed that blue and white tanks had the most positive effects on the growth and development of the fish. Specifically, the blue tank achieved the highest specific growth rates in length (SGR_L: 3.77 ± 0.04%/day) and weight (SGR_W: 5.85 ± 0.09%/day), as well as metamorphosis rate (MR3-D20: 58.67 ± 2.40%) and survival rate (SR: 17.43 ± 0.33%). Additionally, blue and white tanks improved skin coloration (L^*: 42.90 ± 0.91, a^*: 15.11 ± 0.52) and increased total carotenoid accumulation (TCA: 39.74 ± 1.29 µg/g; P < 0.05). In contrast, black tanks recorded the lowest growth performance, survival rates, and skin coloration, with specific growth rates in weight of only 4.72 ± 0.07%/day, metamorphosis rate (MR1-D40) of 28.33 ± 3.38%, and TCA accumulation of 32.80 ± 1.73 µg/g (P < 0.05). These findings confirm that selecting appropriate tank colors, particularly blue and white, can optimize rearing performance and seed quality in tomato clownfish.

Keywords: Tank color, Amphiprion frenatus, growth, survival rate, metamorphosis, coloration quality.