Siamese Tigerfish

Overview

Siamese Tigerfish (Datnioides microlepis) is a freshwater aquarium fish for aquariums where the layout leaves enough swimming room and the water stays stable.

Use these values as planning checks, then make sure the aquarium still has room for behavior, group needs, and calm community fish.

Care requirements

With a Intermediate – Advanced care level, Siamese Tigerfish is best for aquarists who can keep water quality steady and plan compatibility before adding the fish.

With a lifespan of up to 15 years, this is a fish to plan for long term rather than an impulse addition.

Aquarium size and space needs

An aquarium of 900 L or larger can be a reasonable starting point, but it should not be read as permission to overstock.

At up to 45 cm, Siamese Tigerfish stays small, but it still needs room to move, feed, and avoid constant competition.

Water parameters

The temperature range for this fish is 22 to 26 °C, which fits many tropical freshwater aquariums. Choose other fish with overlapping temperature needs.

The pH range for this fish is 6.5 to 7.5. That points to slightly acidic to neutral water, but stability is more important than sudden corrections.

The GH range for this fish is 5 to 20 dGH. That gives some flexibility, but sudden changes are usually more stressful than a stable value that is slightly imperfect.

Temperament and compatibility

Siamese Tigerfish needs more careful companion choice because the temperament data suggests space, boundaries, or similar-sized fish may matter.

Feeding

Use foods that suit a meatier diet and avoid combining it with fish small enough to be treated as food.

Natural habitat and origin

This profile currently lists the origin as Thailand Indonesia Cambodia. Treat this as a broad regional note rather than a complete habitat description.

Before adding this fish

Use this checklist before treating the profile as a match for an existing aquarium.

• Plan for an aquarium of 900 L or larger.
• Choose other fish with overlapping temperature needs.
• Keep pH stable within the listed range instead of making sudden corrections.
• Choose other fish carefully around this temperament.
• Offer a varied diet that matches this species.