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Journal of Experimental Biology 47,307-311 (1967)
Published by Company of Biologists 1967

Visual Pigments in a Tropical Freshwater Fish Etroplus Maculatus (Teleostei)

V. VIRABHADRACHARI 1, R. V. KRISHNAMOORTHY 1, and V. PARVATHESWARARAO 1

1 Department of Zoology, Sri Venkateswara University, Tirupati, India

1. In its natural habitat (fresh water) E. maculatus had VP 5152 (porphyropsin) as the predominant visual pigment.

2. On acclimation to 100% sea water VP 4951 (rhodopsin) was found to be predominant.

3. On acclimation to 50% sea water the visual pigment system of the fish presented a transitory phase.

4. The significance and implications of these results in relation to the earlier work is discussed.

Submitted on April 10, 1967






© The Company of Biologists Ltd 1967