Satanoperca lilith

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Satanoperca lilith, also called One-spot Eartheater, is a highly sought-after bottom-feeding cichlid among specialized aquarists. This Cichlidae species is recognized for sifting through the substrate and for its single dark spot, the feature behind its English common name. Native to Mato Grosso, Brazil, it remains a rare find in the aquarium hobby. The specimens offered by Ton.Fish are wild collected, and this species is available exclusively from Ton.Fish in Canada. It is best suited to a spacious, mature aquarium with a carefully planned layout.

General species description

Satanoperca lilith belongs to the eartheater group, cichlids that take sand or fine gravel into their mouths to separate edible organisms from the substrate. Its natural activity therefore centers on constant bottom exploration rather than open-water swimming. It is generally peaceful and social when kept in a group, but requires adequate aquarium space to display normal behaviour. With a rarity rating of 3 – very rare, it is better suited to experienced aquarists. Wild specimens should be acclimated gradually and kept in consistently stable water.

Geographic origin and biotope

This species is native to Brazil, in the state of Mato Grosso, within the upper rio Tapajós basin. It inhabits freshwater environments associated with tropical streams, generally with soft substrates that allow for sifting and feeding. In the aquarium, this function should be reproduced with fine, smooth sand and effective filtration. Warm, well-oxygenated water with very low nitrogen waste is appropriate for wild fish. The specimens offered by Ton.Fish are wild collected.

Precise location and local name

The stated origin of Satanoperca lilith is Mato Grosso, in the rio Tapajós basin. “One-spot Eartheater” is the main common name used in English-language aquaria. In French, it may be described as a single-spotted eartheater or simply as Satanoperca lilith. No specific Brazilian vernacular name is included here. Provenance is especially important for wild fish, since careful acclimation helps reduce stress caused by transport and changes in water conditions.

Appearance and physical characteristics

Satanoperca lilith has a relatively deep, laterally compressed body suited to life close to the substrate. Its general coloration is subdued, with earthy tones that provide camouflage over sandy bottoms. Its most distinctive visual feature is a single dark marking on the flank or rear portion of the body, depending on the fish’s age and condition. The fins may show warm shades or small markings, particularly in healthy adults. Colour intensity can also change with stress, social status and environmental quality.

General diet

In nature, Satanoperca lilith searches the substrate for small invertebrates and other nutritious particles. In the aquarium, its diet should include quality sinking pellets offered in small portions, along with frozen foods such as brine shrimp, mysis or bloodworms. Regular protein-rich foods support growth, but the overall diet should remain balanced. Avoid sharp particles and floating foods that do not suit its feeding strategy. Regular sand sifting is an important part of its natural behaviour and should be accommodated in the aquarium.

Essential data

• Native river: rio Tapajós, upper basin; Mato Grosso
• Local name used: One-spot Eartheater
• Origin of the scientific name: Satanoperca is the genus name; lilith is the specific name
• Etymology of the full name: Satanoperca approximately means “Satan’s perch”; lilith refers to Lilith, a figure from Mesopotamian and biblical tradition
• Common/vernacular names: One-spot Eartheater; single-spotted eartheater
• Family: Cichlidae
• Subfamily: Cichlinae
• Name pronunciation: sa-ta-no-PER-ka - LIL-ith
• Discovery: recent scientific description; year and author are not included here
• Maximum adult size: approximately 15 cm
• Water temperature and pH: 24 to 28 °C; approximately pH 6.0 to 7.5 in aquaria
• Appearance of the watercourse and surrounding vegetation: tropical freshwater, soft bottoms and banks associated with riparian vegetation
• Typical tankmates: Geophagus altifrons, Satanoperca jurupari, Biotodoma cupido
• Temperament and behaviour: peaceful, social and constantly active over the bottom; may become territorial while spawning
• Water depth: shallow to intermediate areas accessible for substrate feeding
• Sexual dimorphism: difficult to identify in juveniles; differences are mainly visible in mature adults
• Bottom structure and flow: fine sand or very smooth gravel; low to moderate current

In your aquarium

To succeed with Satanoperca lilith, provide a large aquarium with an open sandy area, oversized filtration and regular water changes. Keep several individuals to reduce social pressure, and maintain warm, stable, well-oxygenated water. Wild specimens should be fed gradually after arrival. Because this is a very rare species and is exclusive to Ton.Fish in Canada, careful preparation, quarantine and long-term water quality are essential for its successful aquarium care.