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Severum

Heros efasciatus

Freshwater South America Usually captive bred

Known as the poor man's discus, this disc-shaped South American cichlid offers tranquil personality in a robust package. They are generally peaceful community giants but will relentlessly devour living plants, necessitating hardy floating vegetation or artificial botanicals.

20 cm adult length, drawn to scale. deep body.

Try it in the planner Opens a tank sized to its minimum with 1 fish added.

What it needs

ItemValueBecause
Adult length 20 cm Used for the Space check: the tank must be long enough for the fish to turn round.
Smallest tank 250 L, at least 120 cm long estimated The least water and floor length this species is kept in for good, as a single fish or smallest group.
Extra water per added fish 60 L estimated What each further fish adds once the minimum is met.
Waste load Class 4 of 5 estimated How much waste an adult makes against its size. Feeds the Load check.
Temperature 24 to 29 C Stock sharing a tank need overlapping ranges.
pH 6 to 7.5 Compared with tankmates in the Water check.
Hardness GH 3 to 12, KH 2 to 8 Degrees of general and carbonate hardness.
Flow Low Low-flow fish are stressed in a strong current.
Light Dim Matched to the lighting class on the needs sheet.
Group size Single fish is fine Not a schooling species.
Temperament Semi-aggressive Territorial: weak.
Swims in Middle water Fish that use different levels share a tank more easily.
Lifespan About 10 years A fish is a long commitment.
Experience Suits a first tank A guide to how forgiving the species is of mistakes.

Tags marked estimated are judged from the size and habits of the species rather than measured, so treat them as a sensible default.

Diet and tank layout

Severum is an omnivore that swims in the middle of the tank. It eats or uproots plants, so choose hard-leaved species or none. Give it some cover. It digs, so anchor plants and keep hard rock off loose sand. It will eat fish small enough to swallow.

Tankmates

Works with

Depends

Avoid

Compare any two fish on the compatibility page, or print the equipment for a stock on the needs sheet. How this is worked out: the method.