Inhabit gravel and rubble riffles of creeks and small rivers . Eggs are found attached to the substrate unguarded .
Physical description for Rio Grande darter is currently being compiled.
Behavioural data for Rio Grande darter is currently being reviewed.
Diet information for Rio Grande darter is currently being compiled.
Eggs are found attached to the substrate unguarded .
Freshwater; benthopelagic. Subtropical; 31°N - 25°N North America: lower Rio Grande drainage in Texas, USA and Mexico.
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