Rohu fish, scientifically known as Labeo rohita, is a freshwater fish species native to the Indian subcontinent, particularly prevalent in rivers, lakes, and ponds throughout South Asia. It is an economically significant fish in the region, both in terms of aquaculture and as a popular food item.

Here's a description of the Rohu fish:

1. Physical Appearance: Rohu typically has a moderately deep body with a slightly convex forehead. It has a silver-colored body with a reddish tinge on the fins and tail. The scales are fairly large, and the fish usually has a prominent lateral line running along its sides.
2. Size: Rohu can grow to a considerable size, with adults often reaching lengths of up to 1 meter (3.3 feet) and weights exceeding 20 kilograms (44 pounds). However, the average size caught or farmed is typically smaller.
3. Habitat: Rohu is primarily found in freshwater bodies such as rivers, lakes, and reservoirs with moderate to slow-moving waters. It prefers habitats with vegetation and tends to avoid fast-flowing waters.
4. Diet: Rohu is omnivorous and feeds on a variety of food items including plankton, aquatic insects, crustaceans, and detritus. In aquaculture, it is often fed with a combination of plant-based and protein-rich feeds to ensure optimal growth.
5. Reproduction: Rohu typically spawns during the monsoon season when water levels rise and temperatures are favorable. The eggs are adhesive and are usually deposited on submerged vegetation or substrate. The fry hatch within a few days and grow rapidly under suitable conditions.
6. Cultural Significance: Rohu is an important fish in South Asian cuisine and is prized for its delicious taste and nutritional value. It is prepared in various ways including frying, grilling, and curries. In addition to its culinary importance, Rohu holds cultural significance in many communities where it is consumed.
7. Aquaculture: Due to its popularity as a food fish, Rohu is extensively cultured in fish farms and ponds throughout South Asia. It is valued for its fast growth rate and adaptability to various environmental conditions, making it a preferred species for aquaculture ventures.