Author: Zerunian & Gandolfi, 1990
Comments: Inhabits Lake Posta Fibreno, an elongated karstic lake with underwater springs and caves, 1.1km long, 0.1-0.3 km wide, 0.29 square kilometer, 285 m above sea level, 15 m deep (average depth 2.5 m), about 10°C throughout the year, and clear and well oxygenated water.  Sometimes enters lake tributaries.  Spawns close to underwater springs in December-January.  The lake is very vulnerable to fish introduction or accidental pollution (Ref. 59043).