Feeding behavior, survival, and growth of wild Graus nigra Philippi, 1887 juveniles in captivity (Perciformes: Kyphosidae)

Héctor Flores, Jovanka Rendíc


DOI: https://doi.org/10.3856/vol39-issue3-fulltext-21

Wild juveniles of Graus nigra were collected and acclimated for 30 days in ponds with openwater flow and ambient temperature; the specimens were given a formulated feed. Fish individuals were separated into six groups that were studied for 196 days. The average survival was 80%. The total length increased an average of 93.3% for large individuals (groups 4, 5, 6) and 125% for small ones (groups 1, 2, 3). The total weight showed an average increase of 434% for large fishes (groups 4, 5, 6) and 707% for small ones (groups 1, 2, 3). Graus nigra was found to tolerate captivity and handling, with a relatively high survival rate, making it an attractive species for aquaculture in Chile. 

Flores H, Rendíc J. Feeding behavior, survival, and growth of wild Graus nigra Philippi, 1887 juveniles in captivity (Perciformes: Kyphosidae). Lat. Am. J. Aquat. Res.. 2017;39(3): 607-612. Available from: doi:10.3856/vol39-issue3-fulltext-21 [Accessed 17 Aug. 2019].
Flores, H., & Rendíc, J. (2017). Feeding behavior, survival, and growth of wild Graus nigra Philippi, 1887 juveniles in captivity (Perciformes: Kyphosidae). Latin American Journal of Aquatic Research, 39(3), 607-612. doi:http://dx.doi.org/10.3856/vol39-issue3-fulltext-21