Abstract

INFLUENCE OF DIVERSE LEVELS OF HARDNESS ON GROWTH OF LABEO ROHITA, CIRRHINUS MRIGALA AND CATLA CATLA

Priyanka Sinha*, Utkarsha Koshtha, Sarita Das Gupta and Sujata Shripal

Abstract

The calcium hardness of aquatic bodies is a serious problem for fish production in India, which varies considerably from place to place. During the present study, an experiment was conducted to study the growth performance of the fish fingerlings of Rohu (Labeo rohita) Catla (Catla catla) and Mrigal (Cirrhinus mrigala) for a period of 60 days at three CaCO3 liming levels (50, 180 and 350mg/L) in glass aquaria’s, each having capacity of 15 L of water. Total body weight significantly differed by CaCO3 treatments, however, significant difference in terms of total gain in body weight of all the fingerlings in different hardness levels were observed. The growth rate of fingerlings gradually increased up to 180mg/L and then onward decreases. Growth in terms of body lengths also showed similar significant difference in all the fingerlings. India.

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