The invention provides a biologically culture of Coelastrella sp. F50. The present invention also provides a method for pigment production, oil production, feed production, food production, and pigment composition, feed and food comprising the culture.本發明係提供一種微生物之生物培養物,其中該微生物係為經紋球藻F50(Coelastrella sp.F50)。本發明亦提供生產色素之方法、生產油脂之方法、生產飼料之方法、生產食品之方法、包含前述培養物之色素組合物、飼料及食品。