Surinam Geophagus (Geophagus surinamensis)

Surinam Geophagus care for a spacious sand-bottom aquarium

The Surinam Geophagus, Geophagus surinamensis, is a large South American eartheater cichlid with a calm feeding style and a lot of visual detail: blue-green striping, warm yellow tones around the head, a dark flank spot and extended fin colour as it matures. It is often sold in the trade as Surinam Geophagus, Red-Striped Eartheater or Redstriped Eartheater.

This listing covers the 0411 parent product and its sibling size options: 4-5 cm, 5-6 cm, 7-9 cm, XL and the K173 4-5 cm option. Use the size selector for current live availability before ordering.

A quick identity note matters with this fish. The name G. surinamensis has been used widely in the aquarium trade for similar eartheater species in the Geophagus surinamensis complex. This page therefore keeps the supplier's Geophagus surinamensis name for traceability while writing the care advice for a large, sand-sifting Surinam-type eartheater rather than making exaggerated wild-origin claims.

Quick facts

• Scientific / supplier name: Geophagus surinamensis
• Common / trade names: Surinam Geophagus, Red-Striped Eartheater, Redstriped Eartheater
• Adult size: commonly planned around 20-25 cm, with FishBase listing larger total-length records
• Temperature: 22-25 C from FishBase; many aquarium care sheets use a wider warm range around 24-30 C
• pH: roughly 6.0-8.0, with soft to neutral water preferred for long-term care
• Hardness: soft to moderately hard water; avoid unstable extremes
• Minimum adult aquarium: about 500 litres for adult planning, especially for groups
• Diet: omnivore / benthic sand-sifter
• Temperament: generally peaceful for a large cichlid, but territorial within the group or during breeding

Tank setup

Build this aquarium around the substrate. Eartheaters feed by taking mouthfuls of sand or fine rounded substrate, sifting edible particles, and passing the rest out through the mouth and gill covers. Sharp gravel can damage the mouth and gills, so use smooth sand as the main open floor.

Give adults a broad footprint with open sand, driftwood, smooth stones and a few visual barriers. Plants can work, but they need protection: attach Anubias, Java fern or similar plants to wood and rock, or use robust rooted plants in protected areas. A fish that naturally digs should not be expected to leave delicate foreground planting untouched.

Filtration and maintenance matter more than decoration. Large eartheaters eat well, dig constantly and stir fine particles into the water, so use strong biological filtration, sensible mechanical polishing and a regular water-change routine. Keep nitrate and dissolved waste low; this group does best in clean, oxygenated water with stable chemistry.

Feeding

Feed a varied sinking diet. Use quality cichlid granules, soft sinking pellets or small bottom-feeding foods as the base, then rotate frozen foods such as bloodworm, brine shrimp, mysis, daphnia and finely chopped seafood where appropriate. Include some plant-rich foods such as spirulina, algae-based wafers or blanched greens so the diet is not too heavy.

Because the fish feeds near the bottom, avoid a routine where fast midwater fish take every meal before the eartheater can sift. Smaller feeds that reach the substrate are usually better than one large surface feed. Watch body shape: a healthy eartheater should look full and active, not pinched behind the head.

Compatibility

Surinam Geophagus is best for a larger, calm South American-style community. Good companions are robust but peaceful fish that will not bully it or fit in its mouth, such as larger peaceful tetras from South America, suitable plecos, peaceful Severum-type cichlids, Uaru in very large aquariums, and other calm eartheaters where space allows.

Avoid tiny tetras, shrimp, very aggressive Central American cichlids, fin nippers, frantic tankmates and highly territorial bottom dwellers. Groups can work in the right aquarium, but two or three fish in too little space may lead to one dominant fish pressuring the others. If you want a group, plan the tank around open floor area and sight breaks, not just litres on paper.

Buying and settling in

The active size option at review time was the 7-9 cm variant, with smaller and XL options showing out of stock. A 7-9 cm fish is still not an adult, so buy with the adult aquarium in mind. This is not a small community cichlid for a 100-litre setup; it is a centrepiece eartheater for a serious aquarium.

On arrival, dim the lights, give the fish quiet cover, and avoid chasing it around the tank. Offer food only after it has settled and watch the first week for heavy breathing, clamped fins, bullying or refusal to feed. A stable sand-bottom aquarium with calm tankmates will let the fish show its natural sifting and social behaviour.

Related South American cichlids

• Pearl Eartheater for a larger, more robust eartheater-style cichlid.
• Geophagus altifrons for another large eartheater planning comparison.
• Geophagus sp. Pindare for a specialist Geophagus option.

Sources used for this care note

• FishBase: Geophagus surinamensis
• Fishipedia: Geophagus surinamensis
• AquaInfo: Redstriped Eartheater
• Geophagus taxonomy and surinamensis-complex trade-name context
• Petra Aqua supplier record and exact SKU source image for 0411.