Abstract
In a sample of common two-banded sea bream, Diplodus vulgaris, collected from the northern coast of Tunisia, one specimen displayed abnormal morphology. This individual presented a prominently developed upper margin, arched into a hump, a pointed upper head profile, and a strongly curved lateral line. X-ray imaging
revealed abnormal curvatures in the vertebral column, such as hyperkyphosis and lordosis. A length-weight relationship analysis based on 49 normal specimens and the abnormal specimen showed a slightly negative allometry, suggesting that such specimens are capable of living alongside normal population in the wild.
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