Texas Localities
The scientific name is Dionda argentosa. The named river and creek records are more precise than a general southwestern distribution. Keep the exact locality with an observation, particularly when comparing similar small minnows from neighboring spring-influenced systems.
Algae and Rock
Adults occupy rocky pools and some runs in headwaters, creeks and small rivers. They are found among filamentous algae. That association documents habitat and should not by itself be turned into a claim that every observed fish is feeding exclusively on algae.
Measurements and Identity
The maximum reference is 7.6 centimeters standard length, excluding the tail fin. A clear head view, full body image and visible fins provide useful identification detail. A total-length measurement should retain its own label rather than being compared directly with the standard-length reference.
Habitat Association Is Not a Complete Diet
A fish among algae may be using cover or feeding space. Preserve the observation without inferring an exclusive food source.
All Lakes With Manantial Roundnose Minnow
Browse all lakes and reservoirs with confirmed Manantial Roundnose Minnow records in our database, listed alphabetically.
No published lakes are currently linked to this species in our confirmed records.