Abstract: Overall physical ability of a fish can be evaluated by the estimation of the swimming performance under controlled environment. The critical swimming speed of juvenile Tilapia mossambica (Fork length 1.1cm±0.1, mean±S.D., N=8) was estimated using customized Brett type swimming tunnel with controlled water velocity. The critical swimming speed (Ucrit.) of juvenile T. mossambica was 8.8 BL S-1 (body length) with average swimming duration was 46.25±13.1 minute (mean±S.D.) and average travelled distance was 198.8±22.68 meter (mean±S.D.). The length of undulatory caudal region of T. mossambica was 43.68%±2.10 and 37.48%±1.30 (mean±S.D.) against FL (Fork Length) and SL (Standard Length) respectively. The mechanistic model of the caudal fin propulsion gives assumptions of the basic swimming dynamics and metabolic expenses during the carangiform type of swimming in T. mossambica.
Keywords: Swimming performance, Tilapia mossambica, Critical swimming speed, Aspect ratio.
Title: Estimation of swimming performance of juvenile Tilapia mossambica (Jones and Sarojini, 1952) under controlled environment
Author: Biplab Mahata, Tilak Das, Rajlakshmi Khan
International Journal of Life Sciences Research
ISSN 2348-313X (Print), ISSN 2348-3148 (online)
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