TY - JOUR T1 - Effect of Lunar Synchronization on the Reproduction Time of Discus Fish (Symphysodon sp.) Under Controlled Aquarium Conditions AU - Celik, Pinar AU - Celik, Ihsan JO - Journal of Animal and Veterinary Advances VL - 10 IS - 7 SP - 890 EP - 893 PY - 2011 DA - 2001/08/19 SN - 1680-5593 DO - javaa.2011.890.893 UR - https://makhillpublications.co/view-article.php?doi=javaa.2011.890.893 KW - Discus KW -symphysodon KW -lunar synchronization KW -spawning KW -breeding KW -Turkey AB - The reproduction times of the discus fish were observed for 2 years under fully-controlled production conditions. The position of the moon was also recorded on the spawning day of the fish at a light photoperiod of 14 h and a dark photoperiod of 10 h with water quality parameters of 27-30°C, pH 4.5-6.5 and conductivity of 80-200 μS. Of 102 observed reproductions, 28 occurred at the first quarter of the moon, 28 at full moon, 40 at the last quarter and 6 at new moon. Accordingly, it has been concluded that the discus fish display a reproduction behavior according to the lunar cycle even indoors, although they do not receive direct moonlight. ER -