Satanoperca Jurupari Earth Eater Care Guide

Satanoperca jurupari, the demon earth eater, is one of the most genuinely peaceful medium-sized cichlids in the South American hobby. The species name “jurupari” comes from the Tupi word for forest spirit, which suits its gentle disposition and graceful sand sifting. Effective satanoperca jurupari earth eater care mirrors the geophagus protocol but emphasises group living and a cooler temperature than most South American eartheaters tolerate. This guide from Gensou Aquascaping at 5 Everton Park sets out tank planning, diet, sourcing and the breeding quirks that make jurupari one of the most rewarding eartheaters to keep.

Identifying True Jurupari

True S. jurupari shows an elongated body to 25 cm, an iridescent blue-green spangling on the flanks and yellow-orange edging on the dorsal and anal fins. The species is regularly confused with S. leucosticta and S. mapiritensis; the giveaway is the cheek pattern, which in jurupari forms broken horizontal lines rather than continuous bars. Most farm-bred Singapore stock is a mix of jurupari and leucosticta lineage and the visual differences are subtle even to experienced keepers.

Tank Size for Group Behaviour

Jurupari are obligate group fish. A minimum group of six requires a 180 cm tank with 60 cm depth; smaller groups suffer aggression issues and fail to thrive. Solo specimens almost never survive long. For HDB hobbyists, this is a 6-foot tank commitment of around 450 to 500 litres on a steel-reinforced cabinet. Plan footprint over height; jurupari swim laterally across the bottom third and need lateral space.

Water Chemistry From PUB Tap

Aim for pH 5.8 to 7.0, kH 1 to 4 dKH, gH 2 to 6, and 26 to 28°C. Singapore PUB tap at pH 7.5 needs softening through driftwood, catappa leaves and ideally a partial RO blend at 30 to 50%. Nitrate ceiling is 20 ppm; eartheaters degrade quickly above that level. Weekly 50% water changes are not optional. The aquarium tannins benefits management guide covers the tannin dosing that holds pH stable.

Substrate Is Non-Negotiable

Use fine river sand at 5 cm depth across the entire tank footprint. Jurupari take a mouthful of sand, sift it through their gill rakers for micro-organisms, and expel grains continuously. Aquasoil, gravel or sharp sand all damage the gill rakers within weeks. Tahitian Moon sand, white silica sand or river sand from C328 at $15 to $25 per 5 kg all work. The best aquarium sand comparison guide covers the right grades.

Hardscape and Planting

Open swimming space matters more than dense scaping. Use one or two large smooth river stones for visual breaks, a single substantial driftwood piece, and tough epiphytes attached to wood. Catappa leaves layered on the substrate add tannins and create the flooded-forest atmosphere jurupari evolved in. Skip foreground carpets; constant sand sifting buries them. Tall background Vallisneria works if rooted in pots buried under the sand layer.

Diet and Feeding Schedule

Jurupari are micropredators specialising in chironomid larvae, microcrustaceans and detritus. Feed sinking pellets like Hikari Sinking Cichlid Excel as the base, supplemented daily with frozen bloodworm, brine shrimp, mysis or chopped earthworm. The species refuses floating food. Two small feeds daily produce better growth than one large feed and reduce waste accumulation. Avoid Krill-heavy formulas; they cause digestive issues over time.

Tank Mate Selection

Jurupari pair beautifully with peaceful South American dither fish: large rummy nose schools, hatchetfish, festivum, and Bolivian rams in larger tanks. Discus and jurupari coexist if temperature stays around 28°C. Avoid aggressive cichlids, fast snatchers and any African species. Corydoras work well in 6-foot setups where they can dodge sand sifting activity. Refer to aquascape for rummy nose tetra shoal for a community plan that works.

Delayed Mouthbrooding Behaviour

Jurupari are delayed biparental mouthbrooders. The female lays 100 to 300 eggs on a flat stone or smooth driftwood surface, both parents guard them as wrigglers for 3 to 5 days, then both take fry into their mouths to brood for another 7 to 14 days. Spawning rarely succeeds without a soft water blend and a small temperature shift. Pairs form within a group of six juveniles raised together. Forced pairings almost never work.

Singapore Sourcing and Quarantine

Y618, C328, Iwarna and Aquatic Avenue cycle jurupari stock seasonally. Juveniles at 5 to 7 cm sit at $25 to $45 each; adult groups of six are usually $400 plus. Quarantine for three weeks with a single course of praziquantel and metronidazole; gill flukes and internal flagellates are the most common shipped issues. Wild imports occasionally surface from specialist Carousell sellers at higher prices and need full prophylactic treatment.

Common Health Concerns

Hexamita and head-and-lateral-line erosion appear in nitrate-heavy or low-oxygen tanks. White stringy faeces and head pitting are the early warning signs. Metronidazole at 250 mg per 40 litres for three days, repeated weekly for a month, addresses internal parasites. Prevention is rigorous water changes, low nitrate and a varied diet that includes plant matter alongside protein.

Long-Term Outlook

A mature jurupari group hits its visual peak at four to five years, with adults developing impressive dorsal trailers and intense flank spangling. Plan for a 10 to 15 year lifespan in chilled, well-maintained conditions. The chiller holding 25 to 27°C is essential in HDB Singapore; the chiller sizing singapore climate guide covers BTU sizing for tanks over 400 litres.

Related Reading

• Geophagus Cichlid Care Guide
• Geophagus Eartheater Care Guide
• Amazon Biotope Aquarium
• South American Clearwater Creek Biotope
• Flooded Forest Biotope Aquascape