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Tor barb, Tor tor Systematic position Phylum: Chordata Class: Actinopterygii (Ray-finned fishes) Order: Cypriniformes (Carps) Family: Cyprinidae (Minnows and carps) Genus: Tor Species: T. tor Common/local names English: Tor barb and Tor mahseer Bangladesh: Mohashol (মহাশোল), Mohal (মহাল), Tor mahaseer (টর মহাশির) India: Burapatra, Leopithia, Pukkiranga, Pithia, Mahasol, Mahaseer (Talwar and Jhingran, 1991). Synonyms Barbus megalepis McClelland, 1839 …read more Category: Costal and marine | Management In previous feature, different kinds of physical factors affecting the life of shellfishes were described. The most important physical factors are light, temperature, turbidity, depth, water current, substrate etc. In this feature, different types of chemical factors (viz. salinity, pH and dissolved oxygen) affecting the life of shellfish will be explained. Salinity: Salinity is a major environmental factor …read more Category: Costal and marine | Management In nature, shellfishes are very crucial both in ecological and economical point of view among calcifying species. They play an important role in ecological balance and thus they are termed as engineer of the ecosystem, governing energy and nutrient flows in ecosystems, providing shelters and abodes for many benthic organisms and constituting an important food source for birds, crabs, starfishes, fishes and as well as for dairy and poultry. In …read more Category: Biodiversity | Management
Hilsa shad (Tenualosa ilisha): The national fish of Bangladesh During entire life, Hilsa shad (the national fish of Bangladesh) migrates both from sea to freshwater and freshwater to sea to meet the biological demand. Hilsa shad (Tenualosa ilisha) lives in the …read more Systematic position Phylum: Chordata Class: Actinopterygii (Ray-finned fishes) Order: Cypriniformes (Carps) Family: Psilorhynchidae (Mountain carps) Genus: Psilorhynchus Species: P. balitora Synonyms Cyprinus balitora Hamilton, 1822 Psilorhynchus variegatus McClelland, 1839 Common/local names English: Balitora minnow Bangladesh: Balitora (বালিটোরা) Distributions: Bangladesh, India (North Bengal and Assam, upper reaches of Jamuna river Gomti river at Lucknow), Myanmar and Nepal (Talwar and Jhingran, 1991). Conservation status: Data deficient in Bangladesh (IUCN Bangladesh, 2000). Morphology: …read more Systematic position Phylum: Chordata Class: Actinopterygii (Ray-finned fishes) Order: Perciformes (Perches) Family: Leiognathiidae (Ponyfishes, slimys, or slipmouths) Genus: Secutor Species: S. reconius Synonyms Chanda ruconius Hamilton, 1822 Equula ruconia (Hamilton, 1822) Equula ruconius (Hamilton, 1822) Leiognathus ruconius (Hamilton, 1822) Common/local names English: Deep pugnose ponyfish Bangladesh: Chanda (চান্দা), Tak chanda (টাক চান্দা) and Thutni chanda (ঠুটি চান্দা) Distribution: Indo-west Pacific (Talwar and Jhingran, 1991). Conservation status: Not threatened in …read more |
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