Lambert's lampeye
Rhexipanchax lamberti
Also known as Lamberti lampeye, Lambert's killi
Care at a glance
- Temperature
- 72–79°F (22–26°C)
- pH
- 6.0–7.5
- Adult size
- 1.8 in (4.5 cm)
- Minimum tank
- 14 gal (54 L)
- Temperament
- Peaceful
- Social behavior
- Schooling
- Swim level
- Middle
- Difficulty
- Medium
- Breeding
- Medium
- Rarity
- Rare
- Origin
- Upper Guinea streams, Guinea
- Family
- Procatopodidae
Overview
This is a rarely seen, peaceful schooling fish that should be kept in a group of eight or more in a calm, planted tank. It swims in the middle water and stays bolder and better colored when it has company of its own kind and quiet surroundings. Choose small, gentle tankmates and avoid anything fast or greedy that will beat it to food. Feed small foods such as fine flake, micro pellets, and live or frozen daphnia and cyclops, with baby brine shrimp, spread over the day. A group does well in a tank of around 54 liters with soft, clean water and gentle flow.
In the wild
Lambert's lampeye lives in clear forest brooks of the upper Gambia, Bafing, and Konkoure river systems in Guinea, running through the highlands of Upper Guinea. Give it soft to neutral water around pH 6.0 to 7.5 and a temperature of 22 to 26 C, on the cooler side of that band. A dark substrate, fine plants, driftwood, and steady, gentle flow reproduce the shaded stream it comes from.
Good to know
This lampeye is part of Procatopodidae and reaches about 4.5 cm. It sits in the genus Rhexipanchax, a group of West African highland lampeyes that Huber separated in 1999 from the broad old Aplocheilichthys assemblage. Like its relatives it is a continuous plant spawner of moderate difficulty, laying small numbers of eggs among fine plants over many days, with fry that are small and slow to grow.
Did you know
Its home waters rise in the Fouta Djallon highlands of Guinea, the same uplands that feed the Gambia and, through the Bafing, the Senegal river, which helps explain why this lampeye is so seldom exported.
Tank mates
Lambert's lampeye is a peaceful, schooling species that keeps to the middle. These picks match on water type, temperature, pH, size and temperament.

Vestitus otocinclus
Otocinclus vestitusFreshwater1.6 in (4 cm)14 gal (54 L)72–81°F (22–27°C)Black otocinclus
Hisonotus notatusFreshwater2 in (5 cm)14 gal (54 L)72–81°F (22–27°C)
Tweedie's hillstream loach
Homalopteroides tweedieiFreshwater1.6 in (4 cm)14 gal (54 L)70–79°F (21–26°C)
Indian ricefish
Oryzias dancenaFreshwater1.4 in (3.5 cm)14 gal (54 L)72–79°F (22–26°C)Black arrow tetra
Inpaichthys luizaeFreshwater1.4 in (3.5 cm)14 gal (54 L)72–81°F (22–27°C)Blackline mosquitofish
Gambusia vittataFreshwater1.8 in (4.5 cm)14 gal (54 L)72–81°F (22–27°C)
Common questions
What size tank does a Lambert's lampeye need?
A Lambert's lampeye needs at least 14 gal (54 L). It spends most of its time in the middle.
What temperature and pH do Lambert's lampeye need?
Lambert's lampeye are comfortable at 72–79°F (22–26°C) with a pH of 6.0–7.5.
How big do Lambert's lampeye get?
An adult Lambert's lampeye reaches about 1.8 in (4.5 cm).
Do Lambert's lampeye need a group?
Yes. Lambert's lampeye are a schooling species and should be kept in a group, not singly.
Where to buy
Some links may not be the exact species or variety.
…or ask your local fish store.
Appears in
Freshwater fish · Killifish · Schooling fish · Community fish
Keeping Lambert's lampeye?
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Related species
Mount Nimba lampeye
Rhexipanchax nimbaensisFreshwater1.8 in (4.5 cm)14 gal (54 L)68–75°F (20–24°C)
Filamentous lampeye
Poropanchax luxophthalmusFreshwater1.6 in (4 cm)14 gal (54 L)72–79°F (22–26°C)Scheel's lampeye
Poropanchax scheeliFreshwater1.6 in (4 cm)14 gal (54 L)72–79°F (22–26°C)Blue-green lampeye
Procatopus aberransFreshwater2.2 in (5.5 cm)20 gal (75 L)72–79°F (22–26°C)Amber-finned lampeye
Foerschichthys flavipinnisFreshwater1.4 in (3.5 cm)11 gal (40 L)72–79°F (22–26°C)Nototaenia lampeye
Procatopus nototaeniaFreshwater2.4 in (6 cm)20 gal (75 L)72–79°F (22–26°C)
