Mackerel, Indian Fish - Informative & researched article on Mackerel, Indian Fish
 Indianetzone: Largest Free Encyclopedia of India with thousand of articlesHistory of India


in  
 Art & Culture|Entertainment|Health|Reference|Sports|Society|Travel
Forum  | Free E-magazine  | RSS Feeds  
History of India|Indian Temples|Indian Museums|Indian Literature|Geography of India|Flora & Fauna|Indian Purans|Indian Philosophy|Indian Administration|Indian Languages|Education
Home > Reference > Geography of India > Indian Natural History > Mackerel
Mackerel, Indian Fish
Mackerel is the most common name for various species of fishes which live in temperate and tropical seas.
 
 Mackerel, Indian FishMackerel belongs to the family Scrombridae, which includes some of the most important food fishes of the world, second only to Herrings and Sardines in quantity and quality. In Indian waters two species of mackerel, Rastrelliger kanagurta and R.brachysoma, are found, the latter being restricted to Andaman waters. A third species has also been recorded. The first species represents the Indian mackerel for all practical purposes.

The Indian mackerel, being generally from twenty to twenty three centimetres long (maximum 32 cm), is much smaller than the Spanish or Atlantic mackerel which grows to more than sixty centimetres. The Indian species has an attractive streamlined body, terminal mouth with minute teeth, adipose eyelids, two dorsal fins and a forked caudal fin. Behind the dorsal and anal fins five to six detached finlets are present as also the normal pectorals. The iridescent greenish blue colour of the upper part of the body, with greyish oblique stripes and silvery belly makes the fish a beautiful denizen of the sea.

Being of oceanic habitat, mackerel migrate to coastal waters in large numbers from the month of September to the month of March on the west coast from Cape Comorin to Ratnagiri when the inshore water is cooler and contains more food material. The shoals are in thick masses of millions of individuals swimming close to each other and are near the surface that they can easily be spotted from a distance. The shoals are usually arrow-shaped. The period of migration varies from region to region, being earlier in the south and later in the north.

Their food consists of minute zooplanktons and phytoplanktonic organisms such as copepods, crustacean larvae, diatoms and algae. The period of their maturity is about two years, at a length of twenty to twenty three centimetres. Of the commercial catch the average size ranges from eighteen to twenty two centimetres, indicating that only a few might get a chance to breed. Normally the spawning season is estimated to be from April to September on the west coast and from October to March on the east coast though supplementary spawning in other months have also been recorded. Longevity is estimated to be five years. Ovarian eggs are about one millimetre in diameter but the size of actual spawning and fertilized eggs have not been studied. In early fry stages the individuals have thick spines or spikes on the head, and look quite different from the adult.

About eighty to ninety percent of the total landings of mackerel are from the west coast and the fluctuation in the numbers is so great that the total landings per annum vary from twenty thousand to two hundred thousand tonnes, the average being about sixty thousand tonnes.

(Last Updated on : 17/02/2010)
More Articles in Indian Natural History  (66)
 
Snails  (3)
 
Spider  (1)
 
Sponges  (1)
 
 
Algae  
 
Amoeba  
 
 
Clams  
 
 
 
 
 
 
 
 
Slugs  
 
 
 
 
 
Squids  
 
 
Recently Updated Articles in History of India
Deuli Hill
Deuli hills, located in Odisha, houses several ancient rock-cut Buddhist chambers where Buddhist monks used to dwell, especially during rainy season.
Puphagiri
Puphagiri, situated in Odisha, has been identified as one of the oldest Buddhist establishments of the world. The annual celebration of Buddha Mahotsava in Puphagiri makes the place further inviting for tourists.
Sutuphaa
Sutaphaa was an ancient king of the Ahom kingdom, who was treacherously murdered by a Sutiya king.
Archaeological Sites in Kutch
Archaeological Site in Kutch District means Dholavira. The existence of a new archaeological site, expected to be older than Dholavira by over 15,000 years, near Maruda Takkar hill has been confirmed following research carried out by the Indian Space Research Organisation (ISRO).
Balathal
Balathal, Rajasthan is an interesting archaeological site from where artefacts of Chalcolithic Age and Early Historic Period including various pottery products and ancient skeletal remains have been unearthed.
E-mail this Article | Post a Comment
Forum
Forum on Geography of India
Free E-magazine
Subscribe to Free E-Magazine on Reference
 
 
Mackerel, Indian Fish - Informative & researched article on Mackerel, Indian Fish
Sitemap
Contact Us   |   RSS Feeds
Copyright © 2008 Jupiter Infomedia Ltd. All rights reserved including the right to reproduce the contents in whole or in part in any form or medium without the express written permission of
Jupiter Infomedia Ltd.