The main cause is nutritional deficiency, especially vitamin C. Stress and poor water quality also play a role. Untreated cases will cause disfiguring or death. To combat and cure, ensure good water quality and provide vitamin enriched foods, especially vitamin C. herbivore - Animals whose diet consists mainly of vegetable matter. This usually means they need strong light to thrive. A Hydrometer is an instrument used to determine the specific gravity of a fluid.
Invertebrates are animals without backbones like anemones, corals, shrimps, snails, and crabs.
This enables the fish to detect vibrations in the surrounding water caused by other fish and their own reflected vibrations against obstacles. Mantle - Large, pigmented fleshy portion of tridacnid clams that is exposed to the light by gaping of the shell valves. Also called siphonal tissue. When an animal mimics, or copies the appearance of another animal in order to gain an advantage, like camouflage or a better defense. A good example is the marine fish, Mimic tang .