Oxidative Status and Digestive Histology of Barramundi Perch in Response to Different Tank Colors.

The oxidative status and intestinal and liver histology of Barramundi Perch Lates calcarifer juveniles were investigated in an experiment using different tank colors (black, red, blue, and white) over 6 weeks. It has been previously shown that background color can affect physiological processes in different species. The background colors did not cause significant differences in malondialdehyde, catalase, or glutathione S-transferase, whereas superoxide dismutase and glutathione peroxidase activities were significantly higher in fish that were kept in black tanks.