The iris he describes as "silvery gray clouded with dusky". The bigmouth buffalo is typically a dull brownish olive color with dusky fins. Alydidae are generally of dusky or blackish coloration. The pectoral and pelvic fins are pale without any dusky pigmentation. The streaking is usually blackish or dusky brown or, sometimes, rufescent-brown. They have blue upperparts and dusky underparts. Immediately after birth, a newborn's skin is often grayish to dusky blue in color. Their fins may be yellowish or dusky. The Malabar large-spotted civet is dusky gray. The mother was a typical Tamil Pariah of dusky hue. The upperparts of the chicks are colored dusky and buff. Cromwell Ochre's Legacy back to Dusky D'Orsay. Its main predators are sharks such as the dusky shark, and large bony fish. The specific epithet "obscurus" is Latin and means "dark" or "dusky". Pacific white-sided dolphins usually tend to be larger than dusky dolphins.