Found on sand, clay, mud and/or limestone substrate commonly associated with rooted, submerged vegetation . Oviparous, eggs are deposited in aquatic vegetation, preferably on strands of Ceratophyllum sp. when available .
Dorsal spines (total): 1 - 3; Dorsal soft rays (total): 8 - 13; Anal spines: 1 - 3; Anal soft rays: 5 - 8. Transverse scale rows: 10-13. Distinguished from all other family members by having 3 or less dorsal spines (versus 7 or more), 6-7 broad dark bars along flanks (versus 7 or more), 16-18 peduncle scale rows (versus 18-24).: fusiform / normal; Cross section: oval.
Behavioural data for Spring pygmy sunfish is currently being reviewed.
Eggs are deposited in aquatic vegetation, preferably on strands of Ceratophyllum sp. when available .
Freshwater; benthopelagic; non-migratory . Subtropical North America: endemic to Moss Spring and (historically) adjacent springs in the middle Tennessee River drainage in Alabama, U.
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