Rohu fish is a very popular, common and mostly cultivated freshwater fish species of south Asia. It is a carp fish of cyprinidae family. Rohu fishes are also known by some other names such as rui fish, rohit fish etc. Among the species of carp fish the appreciation of Rohu fish is maximum. It is very tasty and delicious. Rohu fishes are very popular to the people of Bangladesh, India, Nepal, Thailand, Pakistan and some other Asian countries. It is generally a fish of river. But it also can be found in all types of natural water reservoir. Rohu fish farming in pond, mere or lake is very popular and profitable.
Classification of Rui Fish
Physical Characteristics of Rohu Fish
Physical characteristics of the Rohu fishes by which we can recognize them are described below.
Breeding
Rohu fish usually reach physical maturity at the age of 3 years. A female Rohu contain about 0.3 millions of eggs. In favorable environment they lays eggs within April to July. Thy lays eggs in open water reservoir like river. Minnow of this fish can also be produced artificially. Rohu fish don’t lays eggs in stagnant water.
Feed
Rohu fish generally ramble and consume feed from the middle level of water. The main feed of rui fish is plant and putrescent organic substances. The minnow of rohu fish eats only zooplankton and adult fish eats generally phytoplankton. For commercial rohu fish farming, fish meal, cake, rice dust, wheat chaff etc. can served as supplementary feed.
Classification of Rui Fish
- Kingdom : Animalia
- Phylum : Chordata
- Class : Actinopterygii
- Order : Cypriniformes
- Family : Cyprinidae
- Genus : Labeo
- Species : L. rohita
- Scientific name : Labeo rohita
Physical Characteristics of Rohu Fish
Physical characteristics of the Rohu fishes by which we can recognize them are described below.
- The body of Rohu is thick. But the head and tail is comparatively narrow than their body.
- Their whole body is covered with cycloid scales. Except the head and fins.
- Head is triangulated and mouth is inferior.
- Surface and under surface is brown colored.
- Belly is white silver colored.
- Rohu fishes have two pair of nostril.
- Mouth is covered with two lips.
- There are many small indention and pair of trunk in the brink of lips.
- Middle place of caudal fin is bifurcated. So it is called homocercal.
- There are seven fins in the body of rohu fish including odd and even fins.
- Length of the Rohu is about 90 cm to 1 m.
- Scales are smooth and well arranged in a row.
- Front side of head and back side is blackish colored.
- The body is slightly curved to upper side.
- There are about 15-16 cords in the dorsal fins of this fish.
- The scales of body is reddish colored. But the belly scales is silver white colored.
Breeding
Rohu fish usually reach physical maturity at the age of 3 years. A female Rohu contain about 0.3 millions of eggs. In favorable environment they lays eggs within April to July. Thy lays eggs in open water reservoir like river. Minnow of this fish can also be produced artificially. Rohu fish don’t lays eggs in stagnant water.
Feed
Rohu fish generally ramble and consume feed from the middle level of water. The main feed of rui fish is plant and putrescent organic substances. The minnow of rohu fish eats only zooplankton and adult fish eats generally phytoplankton. For commercial rohu fish farming, fish meal, cake, rice dust, wheat chaff etc. can served as supplementary feed.