Can Arrowhead Puffer and Tinfoil Barb Live Together?

Arrowhead Puffer is a highly aggressive species (10/10), while Tinfoil Barb is generally mild-mannered (3/10). This notable difference means Arrowhead Puffer may occasionally assert dominance over Tinfoil Barb.

Large aggression gap (7 points) between Arrowhead Puffer and Tinfoil Barb increases stress risk for the more peaceful fish.

Arrowhead Puffer and Tinfoil Barb both frequent the Bottom (Substrate) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.

Additional behavioural considerations to keep in mind: Hyperactive swimmers can stress shy, slow-moving species through constant motion. Aggressive eaters may outcompete shy fish for food, leading to malnutrition.

Worth noting: Tinfoil Barb is a known jumper, so a tight-fitting lid is essential.

To improve the chances of a peaceful coexistence in this community tank: A larger aquarium with ample hiding spots can help diffuse aggression and give the less dominant fish space to retreat.

The safe temperature window for both species falls between 22°C and 28°C. Aim for the midpoint of this range (around 25.0°C) for optimal comfort.

Both fish can tolerate a pH between 6.5 and 7.5. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 5–15 dGH. Regular testing will ensure conditions stay within this range.

To house Arrowhead Puffer and Tinfoil Barb together, plan for an aquarium of at least 680 litres with a minimum length of 180 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.

Because this pairing requires extra vigilance, include plenty of hiding spots — caves, driftwood, and dense plant clusters — so the less dominant fish can retreat when needed.

Specific environmental needs for this combination include: Sand (Sifters), Smooth Gravel (Sensitive Barbels). Meeting these requirements will help both species thrive.

Both species do well with moderate (standard) water movement, so a standard filtration setup rated for the tank volume should suffice.

Feeding time deserves special attention with this pairing. Tinfoil Barb is an aggressive eater that may prevent Arrowhead Puffer from getting enough food.

Because Tinfoil Barb is a fast, competitive feeder, consider using sinking pellets or feeding at opposite ends of the setup to ensure Arrowhead Puffer receives an adequate share.