Rare contagious cancer discovered in wild catfish

TL;DR - Researchers report a rare transmissible cancer in wild catfish. The discovery suggests contagious tumours might occur across more animal species than currently documented.

• Transmissible tumours have previously been identified in only a few animal types.
• The finding extends their known occurrence to wild catfish.
• The limited excerpt provides no details about transmission, prevalence, or molecular evidence.