Otoliths, scales, and spines of two recaptured subadult red drums Sciaenops ocellatus (514 and 537 mm total length) were examined for induced fluorescence 10 months after injection with oxytetracycline–HCl at about 50 mg/kg body weight. Both fish exhibited fluorescence in sagitta, lapillus, and asteriscus otoliths, scales, and dorsal and anal spines. Sagittae from both fish had formed an annulus between release and recapture.
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Britt W. Bumguardner (1991) studied this question.
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