Jiménez-Rojas, J. E., P. A. Alméciga-Díaz, and D. M. Herazo-Duarte. “Performance of Juvenile Angelfish Pterophyllum Scalare Fed With the Oligochaetes Enchytraeus Buchholzi”. Universitas Scientiarum, vol. 17, no. 1, Jan. 2012, pp. 28-34, doi:10.11144/javeriana.SC17-1.poja.