Figure Eight Pufferfish

Overview

Figure Eight Pufferfish (Tetraodon biocellatus) 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, Figure Eight Pufferfish is best for aquarists who can keep water quality steady and plan compatibility before adding the fish.

Plan the aquarium around the group, not just one individual.

With a lifespan of up to 8 years, this is a fish to plan for long term rather than an impulse addition.

Aquarium size and space needs

An aquarium of 120 L or larger can be a reasonable starting point, but it should not be read as permission to overstock.

At up to 8 cm, Figure Eight Pufferfish stays small, but a group still needs room to move, feed, and avoid constant competition.

A group of 6 or more should have enough room for movement and feeding.

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.

The KH range is 4 to 8 dKH. Use it as a general stability reference rather than a reason for aggressive adjustments.

Temperament and compatibility

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

If kept in a group of 6 or more, the aquarium should have enough swimming room for the group rather than being planned around a single fish.

Swimming zone and behavior

Because this species is best planned as a group of 6 or more, plan the aquarium around the group rather than a single fish.

Feeding

Use the diet value "Molluscivore" to choose foods that match the species rather than relying on a single generic staple.

Natural habitat and origin

This profile currently lists the origin as Malaysia Cambodia Indonesia. 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 120 L or larger.
• Make sure the aquarium has enough open swimming room for the group.
• 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.
• Plan for a group of 6 or more.
• Offer a varied diet that matches this species.