Grain size Grain size Grain size (or particle size) is the diameter of individual grains of sediment, or the lithified particles in clastic rocks. The term may also be applied to other granular materials. This is different from the crystallite size, which refers to the size of a single crystal inside a particle or grain. A single grain can be composed of several crystals. Granular material can range from very small colloidal particles, through clay, silt, sand, gravel, and cobbles, to boulders. Size ranges define limits of classes that are given names in the Wentworth scale (or Udden–Wentworth scale) used in the
Granular pugolovka cycle is about a year, which is normally how long it takes for their spawning season to start after their birth. The granular pugolovka all die shortly after spawning with the females dying before the males due to the more costly act of laying eggs as opposed to the males role of releasing sperm. "Benthophilus granulosus" is a bottom dweller and has a fairly limited diet or zoobenthos. They eat mysids, amphipods, bivalves, insects, and other foods. Granular pugolovka The granular pugolovka ("Benthophilus granulosus") is a species of gobiid fish widespread in the Caspian Sea. It is a small fish,