Adults inhabit pools and backwaters of low-gradient creeks and small to large rivers . Oviparous, open substratum spawners .
Physical description for Rio Grande silvery minnow is currently being compiled.
Behavioural data for Rio Grande silvery minnow is currently being reviewed.
Diet information for Rio Grande silvery minnow is currently being compiled.
The pelagic-broadcast spawning behavior consisted of males pursuing a single female and nudging her abdominal region. When the female was ready to spawn, a single male wrapped around the female at which time eggs and milt were simultaneously expelled. Reproduction usually consisted of several individual spawning episodes with at least 10-min intervals between events .
Freshwater; demersal; potamodromous . Subtropical North America: Rio Grande drainage (including Pecos River) in Texas and New Mexico, USA.
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