OTOLITH MORPHOMETRY-TOTAL FISH LENGTH RELATIONSHIP IN THE POPULATION OF Rasbora daniconius (HAMILTON, 1822) (CYPRINIDAE)
NEETU NIMESH *
Laboratory of Fish taxonomy, Department of Zoology, RGPG College, CCS University, Meerut, Uttar Pradesh, India.
SEEMA JAIN
Laboratory of Fish taxonomy, Department of Zoology, RGPG College, CCS University, Meerut, Uttar Pradesh, India.
RIGZIN KANG
Department of Zoology, SGTB Khalsa College, University of Delhi, Delhi, India.
MANOJ NIMESH
Department of Zoology, SGTB Khalsa College, University of Delhi, Delhi, India.
*Author to whom correspondence should be addressed.
Abstract
This study shows the relationship between otolith morphometry and total fish length of 70 Rasbora daniconius ( Hamilton,1822) (Cyprinidae) specimens from Ganga River near Meerut region, India. Total length and weight of fish specimen ranged between 2.6-7.3 cm and between 10-38g. The length, breadth and weight of otoliths of each specimen were measured which were 71-84mm, 44-56mm and 0.001-0.004g respectively. The relationship was analyzed by linear regression model show high correlation. We observed a strong relationship between otolith length and total fish length. There were no significant differences between left and right otolith of this species (t-test, p>0.05). Otolith morphometry of this species are thought to be useful for fish taxonomists, paleobiologists and researchers investigating the nutritional biology of a fish predator.
Keywords: Otolith morphometry, linear regression, Rasbora daniconius