Adults inhabit gravel and rubble runs and riffles of creeks and small to medium rivers . Migratory behaviour is undetermined .
Phenacobius crassilabrum is distinguished by having the following characters: lips as in sucker-mouth minnow, P. mirabilis; pelvic fins extending to or past anus; 56-68 scales on lateral line; 19-20 scales around caudal peduncle; dark olive above; dark stripe along back wider in front of dorsal fin; light green streak above black stripe along silver side; and 2 yellow spots on caudal fin base .: elongated.
Behavioural data for Fatlips minnow is currently being reviewed.
Freshwater; demersal. Temperate; 37°N - 35°N North America: upper Tennessee River drainage from South Fork Holston River in Virginia to Little Tennessee River in Georgia; extreme upper Savannah River drainage in North Carolina, South Caroline and Georgia, USA.
The following diseases are known to affect Fatlips minnow.
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 3 records indexed .
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