This species was first described by Dominique A. Didier in 2001. Although it had been recognised, the description of this species was regarded as being important because of the increase in the commercial fishing of chimaera.
Description
Estimations of growth and age have only been attempted for a quarter of the species known. This species has a medium-sized body with a tapered whip-like tail. Its length is up to 1.12 m. It can be distinguished from H. novaezealandiae and H. homonycteris as it has a pale silvery colour with no patternation or spots. Estimates suggest that they can live between 15and 22 years, although the lack of data still makes this unreliable.
Distribution
This species is endemic to South America and can rarely be found in small ponds in forests.