Name and Range
The retained scientific name is Dionda nigrotaeniata. Common names containing Guadalupe should not be used to invent a drainage record: the compiled distribution identifies Colorado and San Antonio systems. Historical Dionda classifications also require care when comparing older locality lists.
Rocky Pools
Adults occupy rocky pools, sometimes runs, in headwaters, creeks and small rivers. Filamentous algae are a frequent association. Their presence describes habitat cover; it does not by itself prove that algae are the entire diet of every fish observed there.
Identification and Length
An eye shorter than the snout and eight anal-fin rays are among features used to separate similar Dionda. The reference maximum is nine centimeters total length. Close head and fin images, together with locality, are more informative than the roundnose common name alone.
Do Not Infer a Basin from the Name
Keep documented drainage records distinct from geographic words in a common name. This matters especially when older taxonomic treatments have changed.
All Lakes With Guadalupe Roundnose Minnow
Browse all lakes and reservoirs with confirmed Guadalupe Roundnose Minnow records in our database, listed alphabetically.
No published lakes are currently linked to this species in our confirmed records.