Can Antennae Stingray and Mono Sebae (Brackish) Live Together?

Antennae Stingray is a moderately assertive species (5/10), while Mono Sebae (Brackish) is generally mild-mannered (4/10). This modest difference means Antennae Stingray may occasionally assert dominance over Mono Sebae (Brackish).

In terms of spatial distribution, Antennae Stingray prefers the Bottom (Substrate) zone, whereas Mono Sebae (Brackish) occupies the Middle (Open Water) zone. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

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.

The pH requirements of Antennae Stingray (6–7) and Mono Sebae (Brackish) (7.5–8.5) do not overlap, making it impossible to satisfy both species simultaneously.

Hardness requirements are incompatible: Antennae Stingray needs 1–10 dGH while Mono Sebae (Brackish) requires 12–30 dGH.

Crucially, these species require different water types — one needs freshwater while the other requires brackish conditions. This is a hard barrier to keeping them together.

To house Antennae Stingray and Mono Sebae (Brackish) together, plan for an aquarium of at least 2500 litres with a minimum length of 240 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.

Providing a mix of open swimming space and sheltered areas with rocks, driftwood, or plants will keep both species comfortable and allow natural behaviour.

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.