Intensity can also be considered as the brightness or dullness of a color. Intensity is adjusted by adding additional colors to the pure hue. A color can be made less intense by adding gray to the color. In some ways, intensity can be measured by the amount of gray in the hue.
Making the world better, one answer at a time. The rocks in a drum fish head are a sort of over developed hearing aid. They are called otoliths, and are actually a bone formation, and are similar to the inside of oyster shells or freshwater muscles. Both freshwater and saltwater varieties of the drum have these, and were used in olden times as jewelry or good luck charms.
Specific examples of fish termed rockfish include: 1  Sebastes, a genus of commercial fish that mainly inhabit the North Pacific but with a few species in the North Atlantic and southern oceans.2  Sebastidae, a family of marine fishes that inhabit oceans around the world.3  Sebastes is a genus within this family.ockfish is a common term for fish of a number of species.