Unexpected trophic diversity in the endemic fish Orestias chungarensis in a high-altitude freshwater ecosystem, Lake Chungará (4520 m), northern Chile.

The results of the discriminant function analysis were on the threshold of significance (T‐ square = 236.5, p = 0.06), underlining the lack of marked differences in the body shape of Orestias A and Orestias B. 4 DISCUSSION To date, studies of the ecology of O. chungarensis have only included their initial description (Vila & Pinto, 1986 ) and a characterisation of their diet (Guerrero et al., 2015 ).

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