 One-toed amphiumas are active mostly at night, when they forage for invertebrate prey.Their habits are similar to that of the other members of its genus, preferring slow moving or stagnant, shallow water with either muddy bottoms or areas with weedy vegetation.They have a special affinity for the semi-fluid mud deposits that accumulate in the swampy floodplains of rivers and streams or along the edges of coastal spring-fed rivers.