Bluefin Notho
Nothobranchius rachovii
- Care level
- Intermediate
- Adult size
- 5.5 cm
- Minimum tank
- 40 litres
- Temperature
- 20–24 °C
Species profile
American Flagfish
Jordanella floridae
Common names: American Flagfish, Florida Flagfish, Flagfish
Recognized speciesKillifish
Adult size
Up to 5.5 cm
Up to 5.5 cm
Countries of origin
Good fit for your tank?
Good fit for
- A keeper who has researched this fish and can match its needs
Think carefully if
- You only want to keep one or two, because this fish needs a group of 5 or more
- You keep shrimp you want to protect
A hardy killifish from Florida, with a checkered red and blue pattern, like the American flag. Keep a group of at least 5 in 54 litres or more.
Appearance and Identification
A hardy killifish from Florida, with a checkered red and blue pattern, like the American flag. It tolerates cool water, eats algae, and males guard the eggs.
Check the scientific name when buying, as common names vary between sellers and countries.
Males are far more colourful, with larger fins. Females are usually plain.
Tank Requirements
- Suggested filter
- About 110–160 litres an hour
- Suggested heater
- About 50–75 W for this tank
- Minimum tank volume
- 54 litres
- Minimum tank length
- 60 cm
- Minimum group size
- 5
- Recommended group size
- 8
- Activity level
- Moderate
- Flow preference
- Low
- Planting preference
- Heavily planted
- Hiding places
- Yes
- Lid recommended
- Yes
- Jumping risk
- Moderate
A small, dark, densely planted tank with a tight lid suits most killifish, as they are strong jumpers. Filtration should be gentle.
Behaviour and Tankmates
A jewel-like small fish, with males displaying to rivals and to females.
Often kept as one male with several females, because males can fight.
Males can be quarrelsome with each other.
Best in a species tank, or with small, peaceful fish. Avoid fin nippers. It is likely to eat shrimp. Choose its tankmates with care.
Water Parameters
Fairly tolerant of different water, if it is clean and stable.
Parameter caveat
Keep up regular water changes, and acclimatise new fish slowly.
Feeding
- Diet types
- Carnivore, Insectivore
- Feeding frequency
- Daily
- Preferred foods
- Small live foodsMany killifish prefer these and may ignore dried food.
- Frozen bloodworm and brine shrimpA good everyday alternative.
Prefers small live and frozen foods.
Feed small amounts, and remove anything left after a few minutes.
Breeding
- Breeding type
- Egg Layer
- Breeding difficulty
- Moderate
- Parental care
- None
- Baby foods
- InfusoriaNeeded for the first days, because most fry are very small.
- Newly hatched brine shrimpIntroduce as soon as the fry can take it.
Lays eggs on plants or in the substrate, depending on the species, and many keepers collect the eggs to raise separately. Some species have eggs that survive long dry periods.
Habitat and Origin
- Geographic origin
- North America, United States
- Natural habitat
- Brackish Water, Ditch
- Aquarium contexts
- Planted Aquarium
- Audience level
- Intermediate
Classification
- Profile type
- Recognized species
- Genus
- Jordanella
- Family
- Cyprinodontidae
- Species group
- Fish, Killifish
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Clown Killifish
Epiplatys annulatus
- Care level
- Intermediate
- Adult size
- 3.5 cm
- Minimum tank
- 40 litres
- Temperature
- 20–26 °C
Eggers Killifish
Nothobranchius eggersi
- Care level
- Intermediate
- Adult size
- 5 cm
- Minimum tank
- 40 litres
- Temperature
- 20–24 °C
Gabon Killifish
Aphyosemion gabunense
- Care level
- Beginner
- Adult size
- 5 cm
- Minimum tank
- 28 litres
- Temperature
- 22–28 °C