American flagfish (Jordanella floridae)

Family: Cyprinodontidae

American flagfish — a Cyprinodontidae from Central America, peaceful, hardy and constantly reproducing. Reaches 4.9–7.2 cm; one male to two or three females spreads the attention. 18–22 °C.

Care parameters

Water temperature
18–22 °C
pH
6.5–7.5
GH hardness
5–15 dGH
Adult length
4.9–7.2 cm
Minimum tank
62 L
Water layer
Middle of the water column
Difficulty
Moderate
Temperament
Peaceful, hardy and constantly reproducing
Origin
Central America

Species overview

A Cyprinodontidae species native to Central America: Jordanella floridae lives middle of the water column over warm freshwater streams and lakes. Peaceful, hardy and constantly reproducing. Adults reach 4.9–7.2 cm. In a community tank it pairs well with Corydoras catfish.

Native biotope

Habitat
Warm freshwater streams and lakes
Flow
Still to gentle current
Dissolved O₂
Moderate oxygen levels

Aquascape & hardware

Substrate
Fine sand and gravel
Hardscape
Driftwood and smooth stones
Plants
Hardy common aquarium plants

Temperament, diet & tankmates

Schooling
One male to two or three females spreads the attention
Diet
Omnivorous surface-picker; varied diet keeps colour bright
Recommended tankmates
  • Corydoras catfish — Share the bottom peacefully
Avoid keeping with
  • Large predators — The fry buffet ends everything

Breeding & notes

Sexual dimorphism
Subtle external differences
Breeding method
Gives birth to free-swimming fry; dense plants raise survival

Frequently asked questions

Is American flagfish easy to keep?

Intermediate difficulty. Peaceful, hardy and constantly reproducing; one male to two or three females spreads the attention.

What temperature and water chemistry does American flagfish need?

Aim for 18–22 °C. Stable temperature matching the species origin; 18–22 °C recorded range.

How big does American flagfish get, and what tank size?

Full size is 4.9–7.2 cm. Minimum tank: 62 L, with open swimming space along its middle of the water column habits.

What does American flagfish eat?

Omnivorous surface-picker; varied diet keeps colour bright. Vary the menu — quality flakes or pellets plus frozen or live foods.

Can American flagfish live with other fish?

Peaceful, hardy and constantly reproducing. Recommended tankmates: Corydoras catfish — Share the bottom peacefully. Avoid Large predators — The fry buffet ends everything.

Where does American flagfish come from?

Native to Central America, where it lives in warm freshwater streams and lakes. Still to gentle current; Moderate oxygen levels.

Does American flagfish jump?

Not a noted jumper — a standard cover still keeps dust and spray in.

How does American flagfish breed?

In the aquarium: gives birth to free-swimming fry; dense plants raise survival. Subtle external differences.