Effect of fasting on freshwater angelfish Pterophyllum scalare (Lichtenstein; Pisces: Cichlidae) development

We tested the effect of fasting on development juvenile freshwater angelfish (Pterophyllum scalare). The juveniles were subjected to different periods (0, 3, 6, 9, 12, and 15 days fasting). Fish from all treatments fed for 30 after period. No difference (P > 0.05) was observed between final weight length. There a significant < in 12 liver intestine weight. These results may prove that force use energy reserves, these adaptations also represent saving strategy. fish showed vacuolization hepatocytes ones 0 3 0.05). show during lack feeding, (P. scalare) mobilizes stored liver. survival rate. However, increase number deaths eighth day indicate with more than could be fatal this species life stage. According our findings, it can assumed angelfishes have strategies (e.g. decrease weight) resist fasting.