Blackfin Pearlfish (Austrolebias nigripinnis)

Fish in the family Rivulidae. Hard care. Freshwater.

Quick facts

Scientific nameAustrolebias nigripinnis

FamilyRivulidae

Also known asArgentine Pearlfish, Nigripinnis Killi

Care levelHard

Reef safetyFreshwater

TemperamentSemi Aggressive

DietCarnivore

Adult size2 in

Minimum tank size10 gallons

Water parametersTemp 60-72°F, pH 6.0-7.2, GH 4-12 dGH

Appearance

Stocky annual; males deep blue-black peppered with iridescent pearly-blue dots. A classic South American annual killifish.

Difficulty and care for the Blackfin Pearlfish

Hard

Origin and habitat

Argentina, Uruguay (South America)

Keeper notes

Annual; males very aggressive to each other. Species tank essential. Eats shrimp and fry. Prefers cooler water.

Log Blackfin Pearlfish in your reef tank

Reef Trak gives you the full record on every species in your tank: acquisition date, source, photos, parameters at time of stocking, and links to maintenance and feeding events. Track Blackfin Pearlfish alongside everything else in your reef.

Download Reef Trak See the full app