In this article we will discuss about:- 1. Origin of Rohu Fish 2. Systematic Position 3. Distribution 4. Economic Importance. Origin of Rohu Fish: Class Osteichthyes (Gr., osteon = bone + ichthyes = fish) includes the ray-finned "bony fishes", both marine (e.g., cod, sole, herring, eels) and freshwater. Subclass Actinopterygii of class Osteichthyes are the commonest vertebrates of today. Its [...]
In Labeo, respiration is aquatic, occurring with the help of gills. Respiratory Organs: In Labeo, there are four pairs of gills present in the branchial chambers covered by operculum. Each gill has a double row of gill-filaments or branchial-filaments supported by gill-arch. Each gill filament bears numerous minute transverse lamellae covered with thin epithelium. These lamellae contain capillaries of afferent [...]
In this article we will discuss about the skeleton of rohu fish (Labeo rohita) with the help of suitable diagrams. Exoskeleton: Exoskeleton of Rohu Fish (Labeo rohita) comprises scales and fin-rays. Scales are cycloid type which are thin overlapping bony plates, partly covered by skin. Centrally each scale has an area called focus. Around focus there are concentric rows of [...]