Starfish, a popular term under which are included a large number of sea-animals, belonging all to the great group of Echino derms, but to three dis tinct divisions of that group: the Asterids, the Ophiurids and the Crinoids. Depending on the exact ratio and combination of pigments in the star, the colors of the starfish can range from blue, to brown or orange, but it is not clear whether there are any behavioral or ecological differences among sea stars that have these different colors. A pale-yellowish-pigmented strain, 022-2-26, was isolated from a starfish, Stellaster equestris. Cells of strain 022-2-26 were Gram-negative short rods that were chemo-organotrophic, alkalitolerant and mesophilic. The blue starfish has a bright blue or light blue body, more seldom green, pink or yellow, and there are also red Linckia, which are still widely referred to as L. multifora. The blue starfish gets its color from blue pigment linckiacyanin and some yellow pigment carotenoids. The amount of each pigment makes the color of the blue starfish range from bright blue too orange.