Category: Biology | Physiology

Respiration in Fishes

Respiration is a physiological process by which organisms exchange gases (especially intake of oxygen and releases of carbon-di-oxide),with the environment. This process is also known as external respiration. On the other hand, internal or cellular respiration means the oxidation of complex organic substances (carbohydrates or fats) within cells and tissues to form carbon dioxide and water with release of energy. (BdFISH Dictionary)

Respiration refers a physiological process by which …read more

Category: Coastal Fishes | Fishes | Marine Fishes | Resource

Chacunda gizzard shad, Anodontostoma chacunda (Hamilton, 1822)

Systematic position: Phylum: Chordata Class: Actinopterygii (Ray-finned fishes) Order: Clupeiformes (Herrings) Family: Clupeidae (Herrings, shads, sardines, menhadens) Genus: Anodontostoma Species: A. chacunda

Synonyms: Clupanodon chacunda (Hamilton, 1822) Chatoessus chacunda (Day, 1878) Dorosoma chacunda (Weber & deBeaufort, 1913) Andontostoma chacunda (Munro, 1995)

Common/local names: English: Chacunda gizzard shad Bangladesh: Koi punti (কই পুঁটি), Chakunda (চাকু্নদা)(Rahman, 1989) Phillipines: Kabasi (Herre, 1948) Myanmar: Bony bream (Department of Fisheries Malaysia, 2009)

Distributions: Andaman …read more

Category: Non-fishes | Resource

Shellfishes of Bangladesh: Lobsters, Clams & Crabs

Shellfish, a group of invertebrates and aquatic organism, is covered by chitinous or calcareous exoskeleton. Shell means an outer covering or layer which is popularly known as “Khoalos” in Bengali. Shellfish belongs to two major Phylum Arthropoda and Mollusca. In Bangladesh there are a wide range of shellfishes have been found which comprises different groups such as, Crustaceans (shrimp, prawn, lobster, crayfish, and crab) Molluscs (clam, mussel, oyster and scallop), …read more

Category: Fishes | Freshwater Fishes | Resource

Habitat of Freshwater Fishes of Bangladesh: Order Cypriniformes

The place in where particular plants or animals live is known as habitat. Within the habitat, organism occupies different niches. A niche is the functional role of a species in a community. Habitat is a place where species get what they need to survive food, water, cover, and a place to rare young. There are 265 species under 154 genera and 55 families (Rahman, 2005) found in Bangladesh and they …read more

Category: Biology | Physiology

Introduction to endocrine glands of fishes

The glands that secrete their products into the bloodstream and body tissues along with the central nervous system to control and regulate many kinds of body functions are known as endocrine gland. In fishes various endocrine gland has been found associated with different tasks and functions.

Endocrine glands of fishes: Different types of endocrine glands are found in fishes; such as-

The pituitary gland or Hypophysis Thyroid Gland Adrenal gland …read more

Category: Non-fishes | Resource

Shellfishes of Bangladesh: Mussel, Snail & Oyster

Shellfish, a group of invertebrates and aquatic organism, is covered by chitinous or calcareous exoskeleton. Shell means an outer covering or layer which is popularly known as “Kholos” in Bengali. Shellfish belongs to two major Phylum Arthropoda and Mollusca. In Bangladesh there are a wide range of shellfishes have been found which comprises different groups such as, Crustaceans (shrimp, prawn, lobster, crayfish, and crab) Molluscs (clam, mussel, oyster and scallop), …read more

Category: Fishes | Resource

Fishes of the River Halda

River Halda

River Halda

Bangladesh is a riverine country and more than 700 rivers are present in this country (BFRI, 2007). In ancient time river was the main source of fishes from where people consume and mitigate their demand. Fishes bred and live in river without facing problems. There are four stock of Indian major carps are found in our …read more