Can Longnose Gar and Shovelnose Sturgeon Live Together?

Longnose Gar is a semi-aggressive species (7/10), while Shovelnose Sturgeon is generally mild-mannered (3/10). This notable difference means Longnose Gar may occasionally assert dominance over Shovelnose Sturgeon.

In terms of spatial distribution, Longnose Gar prefers the Top (Surface) and Middle (Open Water) zones, whereas Shovelnose Sturgeon occupies the Bottom (Substrate) zone. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

Worth noting: Longnose Gar 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 12°C and 22°C. Aim for the midpoint of this range (around 17.0°C) for optimal comfort.

Both fish can tolerate a pH between 6.8 and 8. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 8–20 dGH. Regular testing will ensure conditions stay within this range.

To house Longnose Gar and Shovelnose Sturgeon together, plan for an aquarium of at least 4000 litres with a minimum length of 360 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: Plants - Floating, Smooth Gravel (Sensitive Barbels), Sand (Sifters). Meeting these requirements will help both species thrive.

Longnose Gar prefers Low (Still Water) flow while Shovelnose Sturgeon needs High (River/Stream) flow. Consider positioning filter outlets and using baffles to create zones of different current intensity within the same tank.

This pairing usually fails when the tank is treated like a standard mixed community and the caution flags are ignored. Longnose Gar and Shovelnose Sturgeon need extra room, more cover, and closer observation during the first few weeks so small aggression, feeding, or territory issues do not snowball into a long-term problem.