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Growth and bioenergetics of Anabas testudineus (BLOCH) in relation to two seasonal temperatures

Anabas testudineus is an important air-breathing fish. For its incensive cultivation, it is necessary to study the effects of various environmental factors on growth. WINBERG (I 956) first drew attention to the possibiliry of studying the bioenergetics of a fish population. Winberg's hypothesis is based on the assumption that the energy content of the food incake equals the sum of the energy content of the materials lost in egestion and excretion, materials used in metabolism, and materials retained in growth. He formulated an energy budget equation as follows: C=P+R+U+F where C represents food energy, P growth energy, R respiratory energy, U urinary energy and F faecal energy. In the present paper an attempt has been made to prepare a comparative energy budget for summer (29 ± 1.5 °C) and winter (17 ± l 0 C) to understand how temperature affects energy flow.