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Species profile

Severum Cichlid

Heros efasciatus

Common names: Severum Cichlid, Banded Severum, Green Severum

Recognized speciesCichlids
Severum Cichlid (Heros efasciatus)

Adult size

Up to 25 cm

Typical adult length 18–25 cm.

Up to 25 cm

Countries of origin

  • See all stock from Brazil
  • See all stock from Peru

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

The common aquarium severum, a deep-bodied Amazonian omnivore and frugivore that needs a spacious tank and plant protection.

Appearance and Identification

A deep oval cichlid with vertical bars, a dark caudal mark, red or orange spotting, and green, gold, brown, or domestic colour forms.

Most common aquarium severums are H. efasciatus or its strains, not true H. severus. Collection data and breeding behaviour help separate them.

Males may become larger with longer dorsal and anal extensions and stronger facial markings. Females become fuller before spawning.

Tank Requirements

Suggested filter
About 700–1,050 litres an hour
Suggested heater
About 350–525 W for this tank
Minimum tank volume
350 litres
Minimum tank length
150 cm
Minimum group size
2
Recommended group size
5
Activity level
Moderate
Flow preference
Low
Planting preference
Moderately planted
Hiding places
Yes
Lid recommended
Yes
Jumping risk
Low

Provide a large aquarium with wood, rocks, open swimming room, strong filtration, and tough or protected plants. A group requires more space than a pair.

Behaviour and Tankmates

Generally peaceful for a large cichlid but territorial during pairing and breeding.

Can be kept as a pair or group in a large tank. A hierarchy develops among adults.

Pairs defend flat spawning surfaces and fry.

Suitable with robust peaceful medium to large fish. Avoid tiny fish, shrimp, aggressive cichlids, and delicate plants.

Check tankmates for this species

Water Parameters

Temperature
24–29 °C
pH
5–7.5
GH
1–15
KH
0–8
TDS
30–250
Stability importance
Important

Warm soft to moderate water is suitable. Stable clean conditions and a varied diet support long-term health.

Parameter caveat
This species eats or uproots many plants. Do not confuse it with the mouthbrooding true H. severus when planning breeding information.

Feeding

Diet types
Herbivore, 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 omnivore with a strong natural component of fruits, seeds, leaves, and other plant matter.

Include leafy greens, quality spirulina foods, and vegetables. Avoid a protein-heavy diet.

Breeding

Breeding type
Egg Layer, Substrate Spawner
Breeding difficulty
Moderate
Breeding temperature
27 °C
Breeding pH
6.5
Brood or egg count
Up to about 1,000 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. Up to around 1,000 eggs may be placed on flat stones or roots and guarded by both parents.

Habitat and Origin

Geographic origin
Amazon Basin, Brazil, Peru, South America
Natural habitat
Estuary, Floodplain, Slow River, Vegetated Shoreline
Aquarium contexts
Breeding Aquarium, Freshwater Aquarium, Freshwater Community, Large Freshwater Aquarium
Audience level
Intermediate

Classification

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

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