| distribution and habitat suitability index model for the andean catfish astroblepus ubidiai (pisces: siluriformes) in ecuador. | in conservation biology there is a basic need to determine habitat suitability and availability. astroblepus ubidiai (siluriforms), the only native fish in the highlands of imbabura province in the ecuadorian andes, was abundant in the past in the imbakucha watershed and adjacent drainages, but currently it is restricted to a few isolated refuges. conservation actions are needed if this unique fish is to persist. a habitat suitability index (hsi) for the species has been developed in order to ai ... | 2006 | 18494328 |