Plasseraud, O. and Lim, P. and Belaud, A. (1990) Observations préliminaires sur le fonctionnement des zones de frayères de la truite commune (Salmo trutta fario) dans deux cours d'eau Ariègeois (Le Salat et l'Alet). Bull. Fr. Pêche Pisci., pp. 72-81
| Species | Development state | Trait | Primary Data | Secondary Data |
| Salmo trutta fario | Egg | Egg size after water-hardening | Average diameter on the spawning area: 5.5 mm | 5.5 mm |
| Salmo trutta fario | Female | Relative fecundity | 2.054 Age 2] | 2.05 thousand eggs/kg |
| Salmo trutta fario | Spawning conditions | Spawning season | December | ['December'] |
| Salmo trutta fario | Spawning conditions | Spawning depth | Mean depth of 28 cm, min 10 cm and max 54 cm | 28.0 m |
| Salmo trutta fario | Spawning conditions | Spawning substrate | Gravels: bigger than 3.7 cm are the most frequent | Lithophils |