Among vertebrates, aquatic animals have a wide variety of body color. Yellow and red coloration, an important economic trait of aquatic animals, plays pivotal roles in ornamental value and consumption. Fish possess the most chromatophore types in vertebrates, and carotenoids primarily contribute to erythrophore and xanthophore pigmentation. Carotenoid metabolism and regulation of chromatophore development have long been a focu...

Spotted scat ( Scatophagus argus ) is an economically important marine species in China, with high ornamental and edible value. The effects of dietary supplementation of Lianjiang red orange peels, a natural carotenoid source, at 0, 3, 6, 9 and 12%, hereafter referred to as G0, G3, G6, G9 and G12, were measured on color values, carotenoid content, expression of genes such as cyp2j6 , cyp1a1 , hsp70 , slc2a11 , bco2 , cyp26c1 a...

Greater amberjack ( Seriola dumerili ) is an important commercial fish for its high growth rate and excellent flesh quality. However, its sensitivity to variations of water salinity poses challenges to the cage culture. In this study, the greater amberjack were reared in the optimum salinity (30 ppt, CK) and undesired regimes (10 and 40 ppt) for 72 hours. The molecular adaptive mechanisms to salinity stress were revealed by th...