Effect of light color and music on cortisol and glucose of blood as stress indices in goldfish (Carassius auratus)

The present study was aimed to investigate the effect of light color and music on stress indices in goldfish (Carassius auratus). The experiment was designed on random factorial test including 2 light color treatments (red and white) and 3 music treatment (M0= without music, M30= 30 min music and M60= 60 min music). According to obtained results polar effect of light and music and effect of music was not significant on fish growth, blood cortisol, glucose and calcium level (p>0.05). According to these results red color causes decrease growth at goldfish (p<0.01). red color also causes increasing blood calcium level (p<0.01). But it had not effect on blood cortisol and glucose level (p>0.05). Thus red color causes to induce stress on goldfish, but music does not induce stress on this fish and it shows that goldfish is able to recognize music from surround noise.