TY - JOUR ID - 565 TI - Effects of different light colors on growth indices and survival rate in Tiger barb (Barbus tetazone) Juvenile JO - Aquatic Physiology and Biotechnology JA - JAPB LA - en SN - 2345-3966 AU - Forouhar Vajargah, Mohammad AU - Hedayati, Seyed Ali Akbar AU - Hassan Nataje Niazie, Elaheh AU - Hajiahmadian, Michael AD - Y1 - 2014 PY - 2014 VL - 2 IS - 1 SP - 25 EP - 40 KW - Fish Juvenile KW - Light Color KW - Growth indices DO - N2 - Light is one of the important and effective environmental factors in fish life that can affect body activity and metabolism. Present study was done to study the effects of different light colors on growth indices (Growth Rate, Specific Growth Rate and Condition Factor), Feed Conversion Ratio and Survival Rate in tiger barb (Barbus tetazone) juvenile for 6 weeks. To examine, 120 fish juvenile with average weight of 0.073±0.002 g were respectively divided in to four groups treatments including white, natural, green and blue colors (with three replicates for each treatment). Fish were fed by Biomar commercial food twice a day. Results showed that growth indices (GR, SGR) and FCR had significant difference in different light colors (P˂0.05). White and green lights, respectively, led to the highest and lowest GR and SGR in fish, however, there were similar effects of white and blue lights on growth and also green and natural lights on growth. The best feed conversion ratio was observed in natural light and there were no significant difference between other treatments. In addition, the highest condition factor was related to white and blue colors and the lowest condition factor was associated to green and natural colors. Survival rate showed no significant difference in different treatments (P>0.05). Results of present study showed environment light color can significantly affect juvenile growth of tiger barb. Therefore by using suitable light color an optimum growth could be obtained culture period. UR - https://japb.guilan.ac.ir/article_565.html L1 - https://japb.guilan.ac.ir/article_565_45afaae73c148269365fc40bddb37975.pdf ER -