Lestradea

Genus Overview: Lestradea

The genus Lestradea represents a highly distinct, structurally elegant, and rare branch of sand-dwelling cichlids endemic to Lake Tanganyika. Positioned within the diverse Ectodini tribe, these slender, high-speed schooling fish are heavily prized by biotope specialists for their unique jaw modifications, peaceful social structures, and complex maternal mouthbrooding habits.

Brush Jaw Morphology & Open-Sand Foraging

The name Lestradea was established in honour of Arthur Lestrade, a notable early twentieth-century collector of African fauna. Biologically, they are specialized micro-predators and zooplanktonivores that forage across the lake's vast, open sandy plains. They feature highly elongated, compressed profiles driven by deep vertical eye frames that allow them to track movement in sunlit, shallow water zones.

Their most defining taxonomic trademark is a wide, flattened mouth profile lined with an incredibly dense array of fine, flexible, brush-like outer teeth. In their natural wild biotope, an active shoal of Lestradea cruises tightly together just millimeters above the lake bed.

The fish plunge their wide jaws flat into the top layers of sand or sediment clouds, smoothly sweeping and brushing up hidden micro-crustaceans, ostracods, and drifting insect larvae. They rely on dense pharyngeal gill rakers to separate microscopic food particles, venting out the clean waste silt through their gill covers.

Valid Species Directory

Modern scientific records recognize two valid species within this specialized lineage:

• Lestradea perspicax Poll, 1943 – The absolute historical type species of the genus, renowned for its hyper-reflective silver body profile and highly active schooling behaviours.
• Lestradea stappersii (Poll, 1943) – Stappers' Sand Cichlid, a localized geographical variant displaying an elongated snout and a slightly more slender caudal mass.

Females and sub-dominant juveniles carry a flawless, highly reflective plain silver camouflage to mirror sunlit sand ripples and blend seamlessly against shifting surface light waves to confuse flying predatory birds. Dominant mature males undergo a subtle but beautiful transformation, developing glittering coats of metallic yellow-gold, iridescent teal-blue, and pastel violet flecks across their high-crested dorsal fins.

Aquarium Husbandry

Adults achieve a highly manageable maximum length of roughly 4.5 to 5 inches (11–13 cm). Because they are hyper-active open-water endurance swimmers that live in massive shoals and can easily panic, they strictly demand spacious aquariums measuring at least 4 to 5 feet in length (75 to 90 gallons minimum). They must always be kept in groups of 6 or more individuals to establish a natural social hierarchy.

To safely satisfy their natural brush-foraging behaviours, a deep layer of very fine, smooth, soft sand substrate is an absolute, non-negotiable prerequisite; rough gravel can permanently damage their delicate mouth linings.

They are highly advanced **maternal mouthbrooders** that spawn directly over open sand. They are exceptionally peaceful, docile, and mild-mannered fish that completely lack territorial malice toward other species. They must never be housed alongside rowdy or hyper-aggressive rock-dwellers like *Tropheus* or large *Lamprologus*, which will easily bully them and suppress their colours. They thrive beautifully alongside other calm sand-sifters like *Xenotilapia*. In captivity, they eagerly accept premium commercial flakes, micro-pellets, and frozen cyclops or daphnia.