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American flagfish (Jordanella floridae)
AI illustration, not an ID reference

American flagfish

Jordanella floridae

FishFreshwater

Care level
Easy
Temperament
Semi-aggressive
Recommended tank
80 L
Maximum size
6 cm
Temperature
18–27 °C
pH
6.5–8
Diet
Herbivore

Care at a glance

The American flagfish comes from the shallow, plant-rich waters of Florida and owes its name to the male: red stripes on a blue-grey field recall the American flag. Coming from a subtropical region, it copes well with cooler temperatures.

It is one of the few fish that genuinely eats hair algae, which makes it popular in planted tanks. Do keep a few more females than males, provide plenty of planting for cover and avoid long-finned tankmates: it will nibble.

Good to know

  • Nips long fins

Related species

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Values are mainstream hobbyist guidance, not gospel — always watch what your own animals need.