Chrysophytes are distinguished from other algae by their two flagella (also called undulipodia), which are unequal in length. The Chrysophytes also possess characteristic photosynthetic and accessory pigments that give them a golden yellow color. Cells are found primarily in freshwater habitats and either live alone as single cells, or joined together in colonies, filaments or thalli (leaf-like forms). The chrysophytes obtain energy through photosynthesis, although many species are also able absorb dissolved organic carbon as a food source. Chrysophytes characteristically contain the different chlorophyll molecules: a, c1, and c2. Cells store their excess energy in chrysolaminarin, a type of carbohydrate. Most cells are brown or golden in color because of their accessory pigment, a molecule that absorbs light, called fucoxanthin. Blooms of some species may produce unpleasant tastes and odors in drinking water.