James, R. and Sampath, K. (2011) “Effect of stocking density on growth and fertility in the ornamental fish, Xiphophorus helleri”, Indian Journal of Fisheries, 50(3), pp. 339–347. Available at: https://epubs.icar.org.in/index.php/IJF/article/view/7643 (Accessed: 19 June 2026).