Assessment of trout populations inhabiting the Palena River, southern Chile

A survey of trout species was carried out to assess the stocks' quality inhabiting Palena River Basin, one most important rivers for recreational angling in Chilean Patagonia. Six sampling campaigns were over 16 selected stretches river between February 2012 and June 2013. total 912 collected, 57% rainbow (Oncorhynchus mykiss), 33.3% brown (Salmo trutta), 9.6% brook (Salvelinus fontinalis). Also, tiger trutta × Salvelinus fontinalis) (a hybrid trout) recorded. Results showed that both shared same reaches river, with very similar feeding habits, while inhabited smaller more enclosed streams. Maturity stages (V-VI) recorded from fish sampled period spring-summer-autumn case trout; autumn-winter trout, summer-autumn trout. One study's notable features small size mature reaching 17.5 cm length gravid females 12.4 males at age 2+. The maximum 6+, a 69.8 58.5cm, respectively, 3+ female 29.9 2+ male 16.6 cm.