Anthocyanins are important health-promoting pigments that contribute significantly to the quality of fruits. The biosynthetic pathway leading to anthocyanins is well understood, and key regulatory genes have been identified in many species. Recent research has provided new insights into the developmental and environmental regulation of anthocyanin biosynthesis in fruits, particularly the role of light. New discoveries have begun to reveal links between the developmental regulatory network and specific regulators of anthocyanin biosynthesis during fruit ripening. This article proposes a simplified model for the regulatory networks involved in anthocyanin production in fruits. Anthocyanins are the main pigments in flowers and fruits, responsible for their characteristic red, blue, and purple hues. They are markers of ripening, as most fruits accumulate these compounds during ripening. Anthocyanins are also recognized for their potential health benefits. They belong to the flavonoid class and consist of anthocyanidin aglycones bound to one or more sugar moieties. Six common anthocyanidins, including cyanidin, delphinidin, pelargonidin, peonidin, petunidin, and malvidin, occur in fruits. Cyanidin is the most common, found in over 82% of examined fruits and berries. Fruits can be categorized based on where anthocyanins are present: in skin and flesh, only in skin, or only in skin in response to light. In some fruits, all three types can be found. Developmental regulation plays a major role in anthocyanin biosynthesis in the first two categories, while environmental control is more significant in the third. However, environmental factors affect the quantitative and qualitative composition of anthocyanins in ripening fruits. The genetic background of the species/variety determines which anthocyanins occur in fruit, while environmental factors can affect the concentration of diverse anthocyanins in different ways. The flavonoid biosynthetic pathway leading to anthocyanins is well known. It begins with the condensation of 4-coumaroyl-CoA and three molecules of malonyl-CoA, resulting in 4-coumaroyl-CoA and three molecules of malonyl-CoA, which results in 4-coumaroyl-CoA and three molecules of malonyl-CoA, which results in 4-coumaroyl-CoA and three molecules of malonyl-CoA, which results in 4-coumaroyl-CoA and three molecules of malonyl-CoA, which results in 4-coumaroyl-CoA and three molecules of malonyl-CoA, which results in 4-coumaroyl-CoA and three molecules of malonyl-CoA, which results in 4-coumaroyl-CoA and three molecules of malonyl-CoA,Anthocyanins are important health-promoting pigments that contribute significantly to the quality of fruits. The biosynthetic pathway leading to anthocyanins is well understood, and key regulatory genes have been identified in many species. Recent research has provided new insights into the developmental and environmental regulation of anthocyanin biosynthesis in fruits, particularly the role of light. New discoveries have begun to reveal links between the developmental regulatory network and specific regulators of anthocyanin biosynthesis during fruit ripening. This article proposes a simplified model for the regulatory networks involved in anthocyanin production in fruits. Anthocyanins are the main pigments in flowers and fruits, responsible for their characteristic red, blue, and purple hues. They are markers of ripening, as most fruits accumulate these compounds during ripening. Anthocyanins are also recognized for their potential health benefits. They belong to the flavonoid class and consist of anthocyanidin aglycones bound to one or more sugar moieties. Six common anthocyanidins, including cyanidin, delphinidin, pelargonidin, peonidin, petunidin, and malvidin, occur in fruits. Cyanidin is the most common, found in over 82% of examined fruits and berries. Fruits can be categorized based on where anthocyanins are present: in skin and flesh, only in skin, or only in skin in response to light. In some fruits, all three types can be found. Developmental regulation plays a major role in anthocyanin biosynthesis in the first two categories, while environmental control is more significant in the third. However, environmental factors affect the quantitative and qualitative composition of anthocyanins in ripening fruits. The genetic background of the species/variety determines which anthocyanins occur in fruit, while environmental factors can affect the concentration of diverse anthocyanins in different ways. The flavonoid biosynthetic pathway leading to anthocyanins is well known. It begins with the condensation of 4-coumaroyl-CoA and three molecules of malonyl-CoA, resulting in 4-coumaroyl-CoA and three molecules of malonyl-CoA, which results in 4-coumaroyl-CoA and three molecules of malonyl-CoA, which results in 4-coumaroyl-CoA and three molecules of malonyl-CoA, which results in 4-coumaroyl-CoA and three molecules of malonyl-CoA, which results in 4-coumaroyl-CoA and three molecules of malonyl-CoA, which results in 4-coumaroyl-CoA and three molecules of malonyl-CoA, which results in 4-coumaroyl-CoA and three molecules of malonyl-CoA,