American Flagfish

Jordanella floridae

A hardy native killifish patterned like a stars-and-stripes flag — and an algae eater.

Water

Freshwater

Temperature

66–82°F

pH

6.5–8

Hardness

6–20 dGH

Max size

2.5 in

Min tank

20 gal

Temperament

Semi-aggressive

Social

Social

Swim level

All

Diet

Omnivore

Care level

Beginner

Lifespan

2-3 years

Breeding

Egg-layer

Suitability

Common

Origin

North America (Florida)

Famous for grazing hair algae, making it a useful planted-tank ally. Males can be feisty and nippy, so give space and watch tankmates. Tolerates cool water and a wide range of conditions.