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Species profile

Sveni Eartheater

Geophagus sveni

Common names: Sveni Eartheater, Sven’s Eartheater

Recognized speciesCichlids
Sveni Eartheater (Geophagus sveni)

Adult size

Up to 22 cm

Typical adult length 15–22 cm.

Up to 22 cm

Countries of origin

  • See all stock from Brazil

Good fit for your tank?

Good fit for

  • Mature planted aquarium setups
  • Intermediate shrimp keepers

Think carefully if

  • The aquarium contains shrimp-eating fish
  • The tank is newly cycled
  • Water conditions change frequently

A colourful Brazilian eartheater that should be kept in a spacious group over fine sand.

Appearance and Identification

A silver-gold Geophagus with a dark flank spot, extensive blue-green iridescence, and red-orange striping in the fins.

It is often sold under other Geophagus names. Adult caudal pattern, flank spot, body shape, and Tocantins provenance are useful.

Males may become larger with longer fins and stronger colour, but juveniles are difficult to sex.

Tank Requirements

Suggested filter
About 1,600–2,000 litres an hour
Suggested heater
About 400–600 W for this tank
Minimum tank volume
400 litres
Minimum tank length
150 cm
Minimum group size
5
Recommended group size
6
Activity level
High
Flow preference
Moderate
Planting preference
Moderately planted
Hiding places
Yes
Lid recommended
Yes
Jumping risk
Low

Provide a broad fine-sand floor, powerful filtration, high oxygen, open swimming room, and a group of at least five.

Behaviour and Tankmates

Generally peaceful and social with temporary pair territoriality.

A group is essential for stable social behaviour.

Pairs defend a selected spawning site.

Use peaceful robust tank mates. Tiny fish and shrimp may be eaten.

Check tankmates for this species

Water Parameters

Temperature
24–29 °C
pH
5.5–7.5
GH
1–12
KH
0–6
TDS
30–220
Stability importance
Important

Warm soft to moderately mineralised water is suitable when clean and stable.

Parameter caveat
Avoid coarse substrate, small groups, and prolonged high nitrate.

Feeding

Diet types
Detritivore, Insectivore, Omnivore
Feeding frequency
Daily
Preferred foods
  • Quality sinking cichlid pelletUse a staple pellet appropriate to the fish size and mouth shape.
  • Chopped shrimp, mussel, or earthwormOffer clean unseasoned portions as rotating protein foods.
  • Blanched leafy greens or peasUseful for omnivorous and plant-eating species; remove leftovers promptly.
  • Frozen krill or mysisFeed in moderation to add variety and support colour.

An omnivorous sand-sifter taking small invertebrates, detritus, and plant matter.

Spread several small sinking meals across the sand.

Breeding

Breeding type
Egg Layer, Substrate Spawner
Breeding difficulty
Moderate
Breeding temperature
27 °C
Breeding pH
6.5
Brood or egg count
Several hundred eggs.
Incubation
3 days
Parental care
Biparental care
Baby foods
  • Newly hatched brine shrimpSuitable after yolk absorption for most cichlid fry.
  • Crushed high-quality cichlid pelletIntroduce gradually as fry grow.
  • Finely chopped frozen cyclopsUseful supplementary food for larger fry.

A biparental substrate spawner with both parents guarding the clutch and fry.

Habitat and Origin

Geographic origin
Amazon Basin, Brazil, South America
Natural habitat
Freshwater River, Sand/Mud Substrate
Aquarium contexts
Freshwater Aquarium, Freshwater Community, Large Freshwater Aquarium
Audience level
Intermediate

Classification

Profile type
Recognized species
Genus
Geophagus
Family
Cichlidae
Species group
Cichlids, Fish, South American Cichlids

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