Ảnh hưởng của màu bể nuôi lên màu sắc da và hàm lượng carotenoid tích lũy ở cá khoang cổ nemo (<i>Amphiprion ocellaris</i> Cuvier, 1830)

Abstract

    This study aimed to determine the optimal tank color for enhancing the coloration of the false clownfish, Amphiprion ocellaris. Juveniles of false clownfish (3.30 cm and 0.65 g/fish) were placed in glass tanks decorated with self-adhesive background paper stickers available in six different colors: white, clear, orange, blue, violet, and black. The fish were reared in recirculating biological filter system tanks (60 liters/tank) with a density of 15 fish per tank. Each treatment was replicated three times over a 60-day period. The results demonstrate a significant influence of tank color on the evaluation parameters of color (Lab, LCh) and the accumulation of carotenoids in the false clownfish's body. Overall, fish housed in blue, clear, and white tanks exhibited superior coloration compared to those in orange, violet, and black tanks (P < 0.05). However, since the orange-red coloration (a^* index) holds particular importance in assessing the color quality of commercial false clownfish, tanks of blue or clear coloration were found to be the most suitable for culturing this species. These findings underscore the significance of tank color in the culture of false clownfish, and blue and clear tanks are recommended as optimal choices for maintaining the vibrant coloration of this marine aquarium fish.