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Common Wolf Fish

Hoplias malabaricus

Freshwater South America

An ancient, heavily built ambush predator armed with fearsome canine teeth. Usually solitary and intolerant of rivals, it can inflict severe bites on fish and human fingers alike. Provide subdued light, thick driftwood, and an unbreakable heater guard inside a dedicated species tank.

Also called: Trahira, Guabine, Haimara, Tararura, Tiger characin.

45 cm adult length, drawn to scale. torpedo body.

Outgrows a typical home tank. Check this fish against the adult size above before buying a juvenile. The minimum shown is the least it is kept in for good, not a comfortable size.

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

What it needs

ItemValueBecause
Adult length 45 cm Used for the Space check: the tank must be long enough for the fish to turn round.
Smallest tank 600 L, at least 180 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 250 L estimated What each further fish adds once the minimum is met.
Waste load Class 5 of 5 estimated How much waste an adult makes against its size. Feeds the Load check.
Temperature 20 to 27 C Stock sharing a tank need overlapping ranges.
pH 6 to 7.8 Compared with tankmates in the Water check.
Hardness GH 4 to 18, KH 3 to 12 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 Aggressive Territorial: strong.
Swims in Near the bottom Fish that use different levels share a tank more easily.
Lifespan About 12 years A fish is a long commitment.
Experience Some experience helps A guide to how forgiving the species is of mistakes.
Jumps Yes Keep the tank covered.

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

Common Wolf Fish is an carnivore that swims in the lowest part of the tank. It leaves most plants alone. Give it plenty of cover. It will eat fish small enough to swallow.

Tankmates

Works with

No close matches in the data. Check the pair tool.

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.