The impact of photoperiod to accelerate the development and maturation of platy fish Xiphophorus maculatus

Authors

  • FARHANA ISLAM SHAWON
  • NAJMUL ISLAM
  • SAIFUDDIN RANA
  • SHAHIDA ARFINE SHIMUL
  • SK. AHMAD AL NAHID Chattogram Veterinary & Animal Sciences University

Keywords:

Xiphophorus maculatus, Carotenoid content, Ornamental fish

Abstract

This study was conducted to determine the manipulation capacity of photoperiods for alteration of
growth, reproduction and coloration of platy fish. The experiment had four treatments (T1= 12 hrs (hours) L
(Light): 12 hrs D (Dark), T2= 24 hrs L: 0hrs D, T3= 7 days12 hrs L 12 hrs D: 7 days 24 hrs D, T4= 7 days 24
hrs L: 7 days 24 hrs D). Each treatment had three replications with eight fish larvae reared for five months. At
the end of the experiment, T2 had the highest mean weight (0.3587±0.009 g), length (2.4±0.0001 cm), and SGR
(0.2990±0.0490). The T1 and T2 showed the highest survival rate (87.5 %). T2 had the best reproductive results
(maturing in 113 days), the largest percentage of colorful fish (95.24%) and carotenoid content (0.0054 ±0.0003
mg. g-1). A strong interaction was observed between the photoperiod, growth performance, and photoperiod and
the coloration of platy fish (p<0.05). This study suggests that extended photoperiod can improve the growth
performance and coloration of the platy fish.

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Published

2022-06-30