Green Severum (Heros efasciatus)

The Green Severum is a popular South American cichlid known for its calm temperament, intelligence and metallic green colouring. They are often called the “poor man’s discus” because they have a similar body shape but are easier to care for.

Quick facts

• Origin: Amazon Basin, South America
• Adult size: 20–25 cm
• Lifespan: 10–15 years
• Temperament: Semi-aggressive but generally peaceful for a cichlid
• Difficulty: Moderate
• Minimum tank size: 200 litres for one adult

Water parameters

• Temperature: 24–28°C
• pH: 6.0–7.5
• Soft to moderately hard water
• Strong filtration and weekly water changes recommended

Aquarium setup

Green Severums prefer:

• Driftwood and rocks
• Open swimming space
• Sand or fine gravel substrate
• Hardy plants such as Anubias or Java Fern
• Moderate water flow

They may dig occasionally and nibble soft plants.

Diet

They are omnivores and do best on:

• Quality cichlid pellets
• Frozen bloodworms or brine shrimp
• Earthworms
• Vegetables like zucchini, peas and spinach

Tank mates

Suitable tank mates include:

• Silver Dollars
• Geophagus species
• Larger tetras
• Plecos
• Other peaceful medium-large South American fish

Avoid:

• Tiny community fish
• Highly aggressive cichlids

Behaviour

Green Severums are intelligent and interactive fish. Many owners report they recognise feeding time and even take food from your hand. They are usually calm but become territorial during breeding.