Adults inhabit a quiet pool of clear to murky water at a depth of up to 1.2 m and with bottom consisting of sand, silt, rocks and boulders . Migratory behaviour is undetermined .
Physical description for Finescale splitfin is currently being compiled.
Behavioural data for Finescale splitfin is currently being reviewed.
Viviparous. Males possess an andropodium, a structureless lobule of the anal fin which acts only as conveyor to assure successful fertilization.
Freshwater; demersal; pH range: 7.0 - 7.7; dH range: 5 - 20; depth range ? - 1 m . Tropical; 21°C - 25°C Central America: Rio Ameca basin, Jalisco, Mexico.
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