The crown jewel of Slovenian rivers, the marble trout, is notoriously difficult to catch, and is often called the ghost of the streams. It can be found in the river Soča and its tributaries, as well as rivers Reka and Rižana.

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• Fishing season April - October

• Spawning time: October - January
• Marble trout can grow up to 125 cm (50 inches), 22 kilos (55 pounds )