Zoology Library
Biology
Torsion in gastropods: It is a unique developmental process in which the visceral mass, mantle, and shell rotate 180 degrees counterclockwise relative to the head and foot during the larval stage. This causes the mantle cavity and anus to move from a posterior to an anterior position above the head, transforming the originally bilaterally symmetrical…
Protochordata: The organisms belonging to the Protochordata or acraniates are generally known as the lower chordates. They don’t form a “proper” taxonomic group and are only classified as such for convenience purposes. However, they do form a major group of Chordata. They are also known as Acraniata because they lack a true skull. Characteristics of…
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Food and Feeding of Aquarium Fishes: The amount of food required depends upon the type of food, culture conditions, and individual fish. Food and Feeding of Aquarium Fishes Newly hatched larvae may feed almost continuously. Fish generally will not overeat, unless they are fed too infrequently. One to two feedings a day are best for…
Diseases in Aquarium Fishes: Aquarium fish are susceptible to various diseases, often caused by stress, poor water conditions, overcrowding, or the introduction of infected fish. Here’s a breakdown of common aquarium fish diseases, their symptoms, causes, and treatments: Common Diseases in Aquarium Fishes 1. Ich (White Spot Disease) 2. Columnaris (Cotton Wool Disease) 3. Velvet…
Animal Tissue: Animal tissues play a vital role in the structure and functioning of the animal body. They are essential for various physiological processes that enable an organism to survive and thrive. The study of animal tissues, known as histology, provides insights into how these tissues work together to form organs and systems that are…
Human Health and Disease: Human health is one of the most important aspects of our lives, but it is often taken for granted until something goes wrong. From the moment we wake up, we rely on our bodies to perform countless functions, allowing us to live, work, and enjoy life. But what happens when disease…
Pisces: The series Pisces (L., piscis = fish) of the truly jawed vertebrates (Gnathostomata) includes all the fishes which are essential aquatic forms with paired fins for swimming and gills for respiration. we will understand the general characters and classification of fishes upto orders. General Characters of Series Pisces Outline Classification up to order level…
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