[1] The distribution of Ixinandria includes rivers of the Atlantic slope of the Andes in Bolivia and Argentina.

[3] I. steinbachi occurs in Salta Province in mountainous areas at high altitudes ranging from around 1000–2900 metres (3300–9500 ft) above sea level.

[2] Sexual dimorphism includes hypertrophied odontodes around the head margin and on the pectoral fin spines of mature males.

[3] Ixinandria steinbachi is a rheophilic species that lives in fast flowing and very oxygenated waters.

[2] Fertilized eggs have been found on the hidden surface of a stone, suggesting that I. steinbachi could be a cavity spawner.