The below mentioned article provides biology notes on Class Osteichthyes. 1. The endoskeleton is cartilaginous in the embryonic stage, but in the adult forms more or less it is replaced by bones. Thus they have bony endoskeleton. They are ectothermic (cold blooded). There are about 25,000 species of bony fishes. 2. Caudal fin usually homocercal […]
Class Osteichthyes (With Diagram) | Bony Fishes
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Dipnoi: Distribution, Morphology and Affinities | Bony Fishes
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In this article we will discuss about Dipnoi:- 1. Structure of Dipnoi 2. Distribution of Dipnoi 3. Morphology 4. Affinities. Structure of Dipnoi: Dipnoi (Gr. di-two, pnoe-breathing) is a small order of fresh water bony fishes. They respire by gills and lungs. Dipnoi evolved during Devonian period. They are characterized by short jaws, crushing plate […]
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