Data for Egeland TB, Egeland ES and Nordeide JT. "Does egg carotenoid improve larval quality in Arctic charr (Salvelinus alpinus)?", Ecology and Evolution. Correspondence: Torvald B. Egeland Faculty of Education and Arts Nord University Torvald.B.Egeland@nord.no Files are saved as tab-delimited .txt files. The Caro file was used to produce figure 1 in the abovementioned article. The column headings are defined as follows: WL: The wavelength of the carotenoid MC: The mass of the carotenoid Label: If the carotenoid are degraded or not