Marty Trahan caught the fish while on a break during a seven-day stint on a platform in South Marsh Island 128.
He brought the fish back with him when he returned to Lafayette last Thursday, and followed record-submission protocol by having it weighed on a certified scale and examined by a biologist.
That's when Trahan was informed it was a dog snapper, not a mangrove.
The state keeps no records for dog snapper, also known as yellow snapper.
Read the story on how the fish was caught in our articles archive.