Influence of Feed Types with Respect to Feeding Frequency on Larval Survival, Growth and Morphology in the Siamese Fighting Fish, Betta Splendens (Regan)
Dr.Santhi Pon Indira.Y.S.1 and Dr. L.Roselin rajathi 2
B. splendens fry fed on Infusoria soup / rotation of feed showed the low mortality and higher growth parameters (MBW, MBL, SL and CFL) in the first week, Infusoria and Artemia nauplii (1 : 1 ratio) in the second week and Artemia nauplii alone in the third week. Duncan multiple range test revealed that, rotation of feed significantly (P < 0.05) enhanced high growth in fry as compared to other feeds. However, feed types did not influence the size of mouth in B. splendens fry. The length of air bladder was 2.5 times more in fry fed on rotation of feed as compared to fry received Infusoria. Fry received three meals a day significantly (P < 0.05) enhanced the tested growth parameters and length of air bladder (except head and mouth size) as compared to one or two or four meals a day. Fish fed with liver in all stages of B. splendens (fry, juveniles, adolescent and adult) elicited the higher feeding rate than those fed with Artemia and mixture diet; however, the trend was reversed in rate and efficiency of conversion. B. splendens fed with mixture diet in all stages elicited the high protein, lipid and energy contents in muscle and gonad tissues followed by fish fed with Artemia and liver.