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Sixspine butterfly fish is a very attractive fish which is also known as Ocellated Coralfish, Eye-spot Butterflyfish, Six-spined Butterfly-fish or Six-spined Coralfish. It has compressed, sub-rhomboidal body with prominent snout. Anterior portions of soft dorsal and anal fins are the highest. Lateral line ceases the opposite of the posterior fourth of the dorsal fin. Systematic … Read more
Anaerobic respiration is the process by which incomplete oxidation of respiratory substrate takes place. In this case, it occurs in the absence of oxygen resulting the end products of ethyl alcohol and CO2 in plants and lactic acid (in animals) with very slight energy. Anaerobic respiration is observed in certain bacteria, yeast and other fungi, … Read more
Volvox is a common freshwater free-floating chlorophytic green alga that belongs to Volvocaceae family under order Volvocales of division Chlorophyta. They occur in temporary and permanent freshwater tanks, ponds, pools, ditches, etc. There are some 20 freshwater species of Volvox which prefer to live in colonies with up to 60,000 cells by making a gelatinous … Read more
Johannes Friedrich Miescher (a Swiss physician and biologist) first discovered the Nucleic acids as ‘nuclein’ from the nucleus in 1869. Severo Ochoa de Albornoz (a Spanish-American physician and biochemist) discovered the RNA synthesis mechanism in 1959. He won the Nobel Prize jointly with Arthur Kornberg in Physiology or Medicine for his discoveries. In 1965, Robert … Read more
The inland water bodies consist of small aquariums to nursery ponds, canals, beels, haor, baors (oxbow-lake), rivers, streams, flooded lands, etc. These are called freshwater basins. The more diverse fish types are found in these water bodies. The shape, nature, feeding habits, color, etc. vary from species to species. Their cultivation system is also different. … Read more
Every day we eat food to live. Food is any substance that is consumed by animals to produce energy and aids in the body’s nutrition and growth. It is the animal or plant origin that contains proteins, lipids, carbohydrates, vitamins, and minerals. These components are known as essential nutrients. The nutrients are taken by the … Read more