Secchi disc is a simple type of round plate painted with successive black and white colors. Angelo Secchi created the Secchi disc in 1985. A thread is hung in the center of the plate or disc. The diameter of the plate is around 30 cm or 12 inches which is white-black in color. The disc … Read more
The word ‘benthos’ comes from the Greek word ‘bathys’ which means depth. Benthos refers to some aquatic organisms that live above, inside, or near the bottom of a body of water. Such organisms live in flowing or stagnant water bodies and are also found in salt or freshwater habitats. The sedimental organisms at the bottom … Read more
Vitamins are a heterogeneous group of organic compounds that play a vital role in the growth and maintenance of the body of animals. Most vitamins are not made in the body according to the needs of the animal body. All of these elements are different from the basic food elements such as proteins, lipids and … Read more
The spotted crake (Porzana porzana) is a migratory waterbird which belongs to the family Rallidae under order Gruiformes. During winter, they migrate to Pakistan, India, and Bangladesh from Europe and Western Asia. Systematic Position Phylum: Chordata Subphylum: Vertebrata Class: Aves Order: Gruiformes Family: Rallidae Genus: Porzana Species: Porzana porzana Habit and Habitat Spotted crake is … Read more
Hypophysis or the pituitary gland of human is small pea-shaped gland weighing about 0.5 gm which makes up 80 percent of the gland’s overall weight. It is located under the brain, just behind the bridge of the nose between the hypothalamus and the pineal gland. Hypophysis or the pituitary gland consists of the following two … Read more
The unit of protein formation is the amino acid. 23 types of amino acids have been isolated from natural proteins. Amino Acid Requirements of Fish essential. In this case, 10 out of 23 are important for fish. Animals cannot make essential amino acids. So these have to be taken with food. The quality of food … Read more