CLASSIFICATION OF LABEO ROHITA : ROHU
Phylum :- CHORDATA ( Notochord and dorsal tubular nerve cord present and gill-slits present).
Group :- CRANIATA ( Cranium with brain present ).
Subphylum :- VERTEBRATA (Vertebral column present ).
Division :- GNATHOSTOMATA ( Jaws and paired appendages present ).
Super class :- PISCES (Paired fins , gills and skin with scales)
Class :- OSTEICHTHYES ( Bony fishes ).
SUB-CLASS :- ACTINOPTYERGII ( Ray finned fish ).
SUPER ORDER :- TELEOISTEI ( Bony fish proper).
Order :- CYPRINIFORMES ( Anterior vertebrae fused. Webrian ossicles present between air bladder and ear).
GENUS :- Labeo
SPECIES :- rohita
GEOGRAPHICAL DISTRIBUTION
Labeo rohita is widely distributed in tropical and temperate regions specially found in India (Punjab, Assam) and Myanmar.
HABIT AND HABITAT
- Labeo rohita is abundantly found in ponds and rivers. Carps are vegetarian and bottom feeders. They can occasionally feed on animal diet. Because of its feeding habit, it is cultivated with two other carps, Catla catla and Cirrhina mrigala. Rohu breeds only in the rivers
and bund type of tanks but not in confined waters.
GENERAL CHARACTERSTICS OF LABEO ROHITA : ROHU
- Labeo Rohita is commonly known as carp and Rohu in Hindi.
- Body compressed, fusiform, about 1 metre in length and weighing about 4 kg.
- Colour of the body is bluish or brownish on back and silvery white below. Body covered with large overlapping cycloid scales. Scales are of taxonomic importance.
- Body is regionated into head, trunk and tail.
- Head is depressed and is produced into a short, obtuse and blunt snout. It bears a subterminal fringe-lipped mouth bounded by fleshy upper and lower lips. It also contains paired nostrils and paired eyes.
- A pair of filamentous barbels arises from upper lip. Small tubercles cover the snout, which is oblong, depressed, swollen and projecting beyond the jaws.
- Large operculum hangs on either side enclosing gills and branchial chamber.
- Lateral line is distinct. Scales overlying the lateral line are perforated by tubes of the lateral line system. Scales are of taxonomic value. Scales are flat, bony with rounded edges and are called as
cycloid scales. These overlap and form a complete covering. - Dorsal, anal, caudal, paired pectoral and anal fin with soft fin rays present. Caudal fin forked into equal lobes.
- Weberian apparatus present between bladder and inner ear. Kidneys are mesonephric.
ECONOMIC IMPORTANCE
Labeo Rohita has great food value, fonning common man’s food. The flesh is very delicious.
SPECIAL FEATURES
Mouth does not contain teeth. Teeth are found in pharynx only.
IDENTIFICATION
this fish has overlapping scales and above features, hence it is Labeo rohita.
REFERENCES
- https://en.wikipedia.org/wiki/Rohu
- https://www.fishbase.in/summary/82
- Book of Practical Zoology VERTEBRATE by S.S.LAL – Rastogi Publications.
- SOURCES OF IMAGES – https://www.g oogle.com/url? sa=i&url=http %3A%2F%2Fw ww.fishtanksan dponds.co.uk% 2Fprofiles%2Fc hitala- ornata.html&p sig=AOvVaw1x pN2wFEn- Fz3_lilFveMi& ust=160290355 1907000&sour ce=images&cd =vfe&ved=2ah UKEwj46uqXj7 jsAhV40XMBH e0dB0sQr4kDe gUIARDfAQ
- https://www.g oogle.com/url? sa=i&url=https %3A%2F%2Fw ww.shutterstoc k.com%2Fsearc h%2Fnotopteru s%2Bchitala%2 Bfish&psig=AO vVa w1xpN2wFEn- Fz3_lilFveMi& ust=160290355 1907000&sour ce=images&cd =vfe&ved=2ah UKEwj46uqXj7 jsA hV40XMBH e0dB0sQr4kD e gUIARDCAQ
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