Otocinclus huaorani

Otocinclus huaorani was described from streams in Ecuadorian Amazonia within the territory of the Huaorani indigenous people, for whom it is named. Ecuador's Amazonian lowlands contain a diverse loricariid fauna, and O. huaorani represents one of several Otocinclus species found in this region. It is a small, slender species with typical Otocinclus proportions and a pale brown-grey body with a defined lateral stripe.

The streams where O. huaorani occurs are characteristic of the upper Amazon piedmont — warm, soft, slightly acidic, and flowing through dense tropical rainforest. Submerged wood, leaf litter, and aquatic plants provide both shelter and grazing substrates. The species likely forages in groups in shallow, well-lit stream margins where algae and biofilm growth is most productive.

Aquarium keeping of O. huaorani is equivalent to that of other warm-water Amazonian otocinclus. The species is infrequently exported and primarily of interest to collectors building species-specific Otocinclus collections or crafting Ecuadorian biotope aquaria. Standard care applies: group housing, soft warm water, and supplemental vegetable feeding to ensure adequate nutrition.

Water: Soft, slightly acidic at pH 5.5–7.0 and 22–27°C; pristine quality essential for newly imported wild-caught specimens. Tank: 40 litres minimum with plants, wood, and leaf litter; an Ecuadorian Amazonian biotope theme is ideal. Feeding: Biofilm and periphyton primary; supplement with blanched vegetables and spirulina wafers. Breeding: Not documented in captivity; soft, warm water and nutrition are prerequisites. Compatibility: Peaceful with all small community species; pair with Ecuadorian tetras and dwarf cichlids for a biotope display.