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.
Drum Fish, Gaspergou, Gou, Sheepshead. Description. Aplodinotus is Greek for single back, and grunniens is Latin for grunting, referring to the fact that the species may be observed (or felt) making grunting sounds. Except for color, freshwater drum resembles its marine relative the red drum. The fish is deep-bodied and equipped with a long dorsal fin divided into two sections. The dorsal fin usually has 10 spines and 29-32 rays. Freshwater drum are silvery in color and lack the distinctive tail fin spot of red drum.