Morphometric and meristic characters of Wallago attu from bhadar reservoir of Gujarat, India

Abstract

The Morphometric measurements of Wallago attu presented in the Table 1 which depicts that total length 63.83±1.08 and total standard length 59.35±1.28 in cm. The correlation coefficient (r) was minimum 0.256, 0.476 and 0.486 in caudal length, anal fin length, and dorsal fin length respectively. Whereas it was maximum 0.707, 0.666 and 0.602 in total length, standard length and head length for the W. attu. The regression coefficient (b) was also observed and it was minimum 0.814 in eye dia and maximum 59.53 in total length of W. attu. The value of ‘b’ was shows negative allometric growth (b 3.0) and isometric growth (b = 3.0) hence, current study shows that other morphometric parameters with total length shows positive allometric growth for W. attu. Meristic counts also show dorsal fin ray 6, pectoral fin ray 16, anal fin ray 93, pelvic fin ray 12, caudal fin ray 18 and two pairs of barbles.