Poeciliidae

Neon Lampeye

Poropanchax luxophthalmus

The Neon Lampeye, scientifically known as Poropanchax luxophthalmus (formerly classified as Aplocheilichthys luxophthalmus), is a member of the Poeciliidae family. This beautiful schooling fish is easy to keep and breed. Due to these qualities, it can be confidently recommended to novice aquarists.

Tank
from 40 L (11 gal)
Temperature
24 – 30 °C (75 – 86 °F)
Size in aquarium
3 cm (1.2 in)
Acidity
pH 6–8
Natural rangeRange on the map
  • Southern Togo area
  • Southern Benin area
  • Benin
  • Cameroon
  • Nigeria
  • Togo

Tank conditions

Plan the tank stocking
Temperature
24 – 30 °C (75 – 86 °F)
Water pH
Slightly acidic (6) – Slightly alkaline (8)
Water dH
Very soft (3) – Hard (15)
Water salinity
no salt (freshwater)
Size in aquarium
3 cm (1.2 in)
Lifespan
4 years
Temperament
Semi-peaceful including aggression during spawning / intraspecific conflicts
Toward small fish
not a predator
Required aquarium volume
from 40 L (11 gal)
Lighting
dimmed
Substrate
any, but dark
Water flow
moderate
Feeding
Any (universal)
Keeping
Schooling usually from 5–6 individuals and more
Jumping
noticeable a lid is needed
  • Lifespan. A lifespan to expect under good care, not a measured value: it depends heavily on tank volume, water quality and diet — and for selectively bred forms, on their origin as well.
  • Toward small fish. Based on the Predators category in the catalog or the temperament in the species parameters. “A risk to small fish” means the species is not a predator by habit, yet will swallow any fish that fits in its mouth.
  • Required aquarium volume. This is a husbandry recommendation, not a measured value: the volume depends on the keeping mode (schooling (usually from 5–6 individuals and more)), footprint, decor and tank mates.

Care and keeping

Description

Adults of this fish typically do not exceed 3 cm in length. Its body is silver, effectively complemented by two intense blue stripes. The fins and tail are translucent with a thin yellowish edge. Males and females can be distinguished by the shape of the anal fin: in males, it is pointed. Another notable feature is the characteristic bright pigment in the upper part of the iris, which explains the fish's name – "Lampeye."

Habitat

The natural habitats of this fish are in tropical and equatorial Africa. Its range covers the coastal plains in southern Togo, as well as the southern regions of Benin, Nigeria, and Cameroon. It inhabits shallow streams and rivers that form a dense network in the savannas, as well as temporary bodies of water that appear after the rainy season. During the dry season, these bodies of water become shallow, and the water temperature rises significantly, often exceeding 30 degrees.

Behavior and Compatibility

The optimal group size for these fish is at least 10 individuals, as solitary specimens generally do not survive long. They coexist well with other peaceful species of similar size. Closely related Norman's Lampeyes make excellent tank mates.

Care and Maintenance

For comfortable keeping of a group of 10 fish, an aquarium with a volume of 40–50 liters is suitable. When setting up, it is important to create enough hiding places, using, for example, dense plant thickets, driftwood, or other natural or artificial decorative elements. It has been observed that fish display their brightest coloration under subdued lighting. Floating plants, such as Salvinia or Pistia, will not only provide the desired shade but also serve as reliable protection against accidental jumps. The Neon Lampeye is known for its jumping ability, which it uses in its natural environment to evade predators or to migrate to new bodies of water during seasonal floods. Although these fish are quite adaptable to various conditions, sudden temperature changes and water parameter fluctuations should be avoided.

Diet

The daily diet can include dry and freeze-dried foods, such as flakes or granules of suitable size. Live foods, such as Daphnia, Artemia, and other small invertebrates, will serve as an excellent supplement to the main diet.

Breeding and Reproduction

Neon Lampeyes regularly reproduce. Optimal conditions for their breeding are slightly acidic water at about 25°C and a protein-enriched diet. The fish spawn among thickets of fine-leaved plants. The incubation period for the eggs is 10 to 14 days. After hatching, it is advisable to transfer the fry to a separate tank to prevent them from being eaten by adult fish.

Diseases

The fish are hardy and undemanding. Diseases usually manifest only with a significant deterioration in keeping conditions. In a balanced aquarium ecosystem, health problems are generally absent.

How to choose

When selecting individuals, attention should be paid to the overall activity of the school: healthy fish should be active and exhibit species-specific schooling behavior. Avoid purchasing fish with signs of fin damage, the presence of white spots or ulcers on the body, as well as individuals that keep to themselves or have sunken bellies. Healthy specimens should have clear, transparent eyes with a pronounced luminous pigment in the upper part of the iris. Since this species is an active jumper, when purchasing, make sure that the fish in the store's aquarium do not appear emaciated due to stress or improper feeding. It is recommended to acquire a group of 10 or more individuals at once, as keeping them in smaller numbers leads to severe stress and rapid death of the fish. During transportation, it is important to ensure sufficient water volume and aeration to avoid overheating and oxygen deprivation.

Compatibility

There are no pair reviews for this species yet — check tankmates in the matcher.

All tankmates

Plants and this fish

Matching water does not mean the plant will stay intact.

Frequently asked questions

The essentials: size, tank volume, water parameters and care

How big does Neon Lampeye get?

An adult reaches 3 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.

What size aquarium does Neon Lampeye need?

The recommended volume is 40 L. A smaller tank speeds up nitrate build-up and raises stress levels.

What water parameters does Neon Lampeye need?

Temperature 24–30 °C, pH 6–8, hardness 3–15 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.

How long does Neon Lampeye live?

Around 4 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.

Is Neon Lampeye aggressive?

Temperament: semi-peaceful (including aggression during spawning / intraspecific conflicts). Keep this in mind when choosing tank mates.

How many Neon Lampeye should be kept together?

Recommended setup: schooling (usually from 5–6 individuals and more). Ignoring this is a common cause of stress and disease.

What does Neon Lampeye eat?

Diet type: any (universal). Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.

What is the scientific name of Neon Lampeye?

The scientific name of the species is Poropanchax luxophthalmus, family Poeciliidae. It also appears in the literature as: Aplocheilichthys dispar, Aplocheilichthys hannerzi, Aplocheilichthys luxophthalmus.

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Other scientific names and conservation status

Other scientific names
Aplocheilichthys dispar, Aplocheilichthys hannerzi, Aplocheilichthys luxophthalmus, Aplocheilichthys macrophthalmus, Fundulopanchax luxophthalmus, Fundulus luxophthalmus
Poropanchax luxophthalmus
formerly Aplocheilichthys luxophthalmus
Conservation status
Least concernLC