Researchers are currently investigating whether a contagious cancer that has been affecting brown bullhead catfish in Quebec has moved into New Brunswick’s waterways. The effort, led in part by longtime fisherman and researcher Scott Young, seeks to establish if the disease, first identified in Quebec, is present in lakes and rivers across the neighboring province.
The cancer, which spreads among brown bullhead catfish, was initially documented in Quebec’s fish populations. Concern grew after Young, who has spent four decades fishing the region, began noticing an increase in spotted fish that could signal the disease’s presence. His observations have prompted a focused sampling campaign throughout New Brunswick’s inland waters.
Field teams are collecting specimens from multiple sites to test for the cancer’s distinctive cellular markers. By comparing results with those from Quebec, scientists hope to determine whether the pathogen has crossed provincial borders. Detecting the disease early would allow wildlife managers to consider containment or mitigation measures before the infection becomes widespread.
The investigation is part of a broader effort to monitor aquatic health in eastern Canada. While the disease has not yet been confirmed in New Brunswick, the proactive approach reflects growing awareness of how transmissible cancers can impact fish ecosystems. Researchers emphasize that understanding the pathogen’s range is essential for protecting both biodiversity and the fishing community that relies on healthy catfish stocks.
If the cancer is found in New Brunswick, authorities may need to adjust fishing guidelines and develop strategies to limit further spread. For now, the study remains in its sampling phase, with results expected later in the season.
Scott Young’s 40‑year record of observations provides a valuable baseline for the study, illustrating how long‑term local knowledge can aid scientific investigations into emerging wildlife threats.