Table 3. Skin color indices (L*, a*, b*) of different body regions (dorsal, ventral, and caudal fin) in giant trevally (Caranx ignobilis) juveniles reared under different tank colors
Parameters | Treatments |
White | Blue | Red | Yellow | Dark grey |
Dorsal region |
L* | 81.71 ± 1.42c | 75.88 ± 1.23b | 74.69 ± 1.18b | 80.86 ± 1.49c | 66.53 ± 1.82a |
a* | 1.95 ± 0.09a | 2.96 ± 0.08b | 3.25 ± 0.06c | 1.84 ± 0.05a | 3.45 ± 0.12c |
b* | 7.43 ± 0.53a | 11.04 ± 0.17c | 12.20 ± 0.28c | 11.43 ± 0.47c | 9.72 ± 0.43b |
Ventral region |
L* | 94.02 ± 1.15c | 87.06 ± 1.46b | 84.49 ± 1.70ab | 92.10 ± 1.01c | 81.06 ± 1.70a |
a* | 1.21 ± 0.03d | 0.80 ± 0.02b | 0.82 ± 0.03b | 0.05 ± 0.01a | 0.98 ± 0.04c |
b* | 6.13 ± 0.19a | 7.97 ± 0.16bc | 8.81 ± 0.36c | 8.12 ± 0.27bc | 7.45 ± 0.26b |
Caudal region |
L* | 74.64 ± 0.92b | 57.32 ± 1.73a | 55.45 ± 1.04a | 73.68 ± 1.16b | 54.34 ± 1.53a |
a* | 1.45 ± 0.04b | 1.45 ± 0.05b | 1.74 ± 0.04c | 0.72 ± 0.06a | 1.93 ± 0.13c |
b* | 5.66 ± 0.43a | 8.17 ± 0.36b | 9.24 ± 0.41b | 13.25 ± 0.80c | 6.33 ± 0.49a |
Data represent mean values ± SE (n = 3).
Means with different superscripts in the same row differ significantly (p < 0.05).
L*, indicates lightness; a*, red-green chromaticity; b*, yellow-blue chromaticity.