A tagged estuary perch has shattered records after being recaptured in Tasmania’s Arthur River almost 11 years after scientists first released it.
The remarkable fish was originally caught and tagged in January 2015 as part of a research project.
An angler recently found it again, now measuring 332mm compared to its original 303mm length.
Scientists estimate the perch is now 22 to 24-years-old. The slow growth of just 29mm over a decade highlights the species’ extremely gradual development, particularly in males.
“That’s a new record—this fish spent almost 11 years swimming free before being caught again,” Fisheries Tasmania said.
The discovery provides crucial evidence about estuary perch longevity and population dynamics.
Researchers say the recapture suggests the local population remains small, with many other tagged fish being caught multiple times.
The original tagging was part of a UTAS/AMC Honours Project led by Bryan Van Wyk.
The long-term study aims to better understand the threatened species’ behaviour and habitat needs.
Estuary perch are protected under Tasmanian law. All catches must be released immediately, with penalties applying for taking the fish.
Fisheries Tasmania urges anglers who catch tagged estuary perch to record tag numbers and report them via 1300 INFISH or [email protected].
