Can Florida Gar and Sterba's Corydoras Live Together?

Florida Gar is a semi-aggressive species (7/10), while Sterba's Corydoras is peaceful (1/10). This notable difference means Florida Gar may occasionally assert dominance over Sterba's Corydoras.

Large aggression gap (6 points) between Florida Gar and Sterba's Corydoras increases stress risk for the more peaceful fish.

In terms of spatial distribution, Florida Gar prefers the Top (Surface) and Middle (Open Water) zones, whereas Sterba's Corydoras 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: Florida 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 24°C and 28°C. Aim for the midpoint of this range (around 26.0°C) for optimal comfort.

Both fish can tolerate a pH between 6 and 7.6. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 8–15 dGH. Regular testing will ensure conditions stay within this range. An aquarium test kit is recommended for monitoring.

To house Florida Gar and Sterba's Corydoras together, plan for an aquarium of at least 1320 litres with a minimum length of 240 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.

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, Sand (Sifters). 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.