Abstract

Abstract Channel catfish Ictalurus punctatus (280–379 mm, total length) were tagged with soft visual implant alphanumeric tags and Floy t-bar anchor tags to evaluate long-term tag retention (270 d). Visual implant tags were not considered to be a viable method of tagging channel catfish; tag loss was 100% at 172 d after tagging. Retention of anchor tags was 100% at 97 d; however, tag retention had decreased to 71% at 270 d after tagging.

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