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Siamese Tigerfish

Datnioides pulcher

Freshwater South-east Asia

A legendary, critically endangered predator prized for its gold body and broad black vertical bars. It stalks peacefully among large tankmates but snaps up smaller fish in an instant. Provide powerful biological filtration, large driftwood snags, and clean meaty foods like lancefish and prawns.

35 cm adult length, drawn to scale. deep 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 35 cm Used for the Space check: the tank must be long enough for the fish to turn round.
Smallest tank 700 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 200 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 24 to 28 C Stock sharing a tank need overlapping ranges.
pH 6.5 to 7.5 Compared with tankmates in the Water check.
Hardness GH 6 to 16, KH 4 to 10 Degrees of general and carbonate hardness.
Flow Medium Low-flow fish are stressed in a strong current.
Light Moderate Matched to the lighting class on the needs sheet.
Group size Single fish is fine Not a schooling species.
Temperament Predator Territorial: weak.
Swims in Middle water Fish that use different levels share a tank more easily.
Lifespan About 15 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

Siamese Tigerfish is an carnivore that swims in the middle of the tank. It is safe with plants. Give it plenty of cover. 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.