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The Roundnose Minnow

Roundnose Minnow is a small Rio Grande basin fish associated with rocky pools and filamentous algae. Plant material is recorded as food, giving the algae association a feeding role as well as habitat context.

Range and Identity

Dionda episcopa is recorded in the Rio Grande drainage above the Devils River region in Texas, New Mexico and Mexico. Related Dionda can have restricted neighboring distributions. The scientific identity and exact tributary should therefore remain connected when comparing small minnows from nearby waters.

Habitat and Behavior

Adults occupy rocky pools and sometimes runs in headwaters, creeks and small rivers. Filamentous algae are a frequent association. This does not make every algal patch equivalent habitat; current, substrate and the particular stream remain useful details in an observation.

Food and Life History

The maximum reference is 7.7 centimeters total length, with 5.5 centimeters given as a common size. Algae and other plants dominate the stated food account. No independent maximum mass or precise migratory behavior is established in the retrieved summary.

Field Note

Distinguish the algae actually associated with the fish from a general statement about green water. Attached filamentous growth and suspended algae describe different features of a stream.

All Lakes With Roundnose Minnow

Browse all lakes and reservoirs with confirmed Roundnose Minnow records in our database, listed alphabetically.

No published lakes are currently linked to this species in our confirmed records.

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