Various ingredients are used in the preparation of supplementary food to meet the nutritional needs of fish. Foods and prepared feeds are processed to improve the nutritional value of these ingredients. The reasons why food is processed are: (1) to facilitate the movement of food; (2) can be shaped like a pellet; (3) the quality … Read more
A system known as the digestive system has been developed in vertebrates to perform the functions of food swallowing, digestion, absorption and assimilation and excretion of indigestible parts. Most of the food changes and becomes simple and soluble so that it can be easily absorbed by the blood and lymph. Such mechanical and chemical breakdown … Read more
Bone is a living tissue that responds to healthy or unhealthy conditions by becoming thicker or thinner. During childhood, bones are actively being built up, which slows down during the teen years. Bones are also being broken down, especially after age 20 due to wear and tear and weakening as we age. Bone tissue is … Read more
Introduction The system through which blood circulates in different organs and parts of the body is called Blood Circulatory System. The presence of well-developed circulatory system can be observed in almost all animals with few exceptions. Fish have a closed type of blood circulatory system. Food, oxygen and waste products are transported from one part … Read more
The skeletal chain formed by the four ossicles connecting the anterior chamber of the perilymphatic sac and the swimbladder, known as the Weberian apparatus. Scientist Weber discovered them in 1820, hence the name Weberian Apparatus. The bones are the tripus, the claustrum, the intercalarium, and the scaphium. Of these, the tripus, intercalarium, and scaphium are … Read more
Giardia duodenalis (Giardia intestinalis/ Giardia lamblia) is a flagellated parasitic microorganism. It is the only pathogenic protozoan found in the duodenum and jejunum of humans. It is the cause of disease, known as giardiasis which is actually infection of the small intestine. It is found throughout the world. Giardiasis is the most common water-borne, parasitic … Read more