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Southeast Pacific and Southwest Atlantic: Chile, Peru and Argentina. Subtropical, tropical.
首次成熟时的长度 / 大小 / 重量 / 年龄
成熟度: Lm ?  range ? - ? cm Max length : 100.0 cm TL 雄鱼/尚未辨别雌雄; (参考文献 1394); 最大体重: 4.5 kg (参考文献 1394)
Found on exposed rocky shores (Ref. 1394). Sometimes enters estuaries and rarely freshwater habitats, where it is marginally sympatric with Lutra canadensis provocax (Ref. 1522). Feeds on crabs, shrimps, mollusks, and fish; sometimes freshwater prawns (Ref. 1394). Found on exposed rocky shores. Feeds on crabs, shrimps, mollusks, and fish; sometimes freshwater prawns (Ref. 1394). Sometimes enters estuaries and rarely freshwater habitats, where it is marginally sympatric with Lutra canadensis provocax (Ref. 1522).