Can Bleeding Heart Tetra and Mono Sebae (Brackish) Live Together?
Bleeding Heart Tetra and Mono Sebae (Brackish) are not recommended as tank mates due to incompatible water types and conflicting pH requirements. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.
At a Glance
Behaviour & Temperament
Bleeding Heart Tetra is a peaceful species (2/10), while Mono Sebae (Brackish) is generally mild-mannered (4/10). This modest difference means Mono Sebae (Brackish) may occasionally assert dominance over Bleeding Heart Tetra.
Bleeding Heart Tetra and Mono Sebae (Brackish) both frequent the Middle (Open Water) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.
Water Parameters
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 Bleeding Heart Tetra (5.5–7.2) and Mono Sebae (Brackish) (7.5–8.5) do not overlap, making it impossible to satisfy both species simultaneously.
For general hardness, the shared comfort zone is 12–15 dGH. Regular testing will ensure conditions stay within this range.
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. An aquarium test kit is recommended for monitoring.
Tank Setup
To house Bleeding Heart Tetra and Mono Sebae (Brackish) together, plan for an aquarium of at least 480 litres with a minimum length of 150 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.
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: Plants - Densely covered, Driftwood (Digestion/Hiding), Leaf Litter/Blackwater, Sand (Sifters), Smooth Gravel (Sensitive Barbels). Meeting these requirements will help both species thrive.
Note a potential conflict in setup requirements: Mono Sebae (Brackish) is a plant destroyer, which conflicts with Bleeding Heart Tetra's requirement for live plants. Compromise where possible or prioritise the more critical need.
Both species do well with moderate (standard) water movement, so a standard filtration setup rated for the tank volume should suffice.
Find the right tank equipment
Browse tanks, décor, and equipment suited for this setup.
Frequently Asked Questions
Can Bleeding Heart Tetra and Mono Sebae (Brackish) live together?▾
No. This combination is not recommended. Key incompatibilities — such as different water type needs — make cohabitation unsafe.
What size tank do Bleeding Heart Tetra and Mono Sebae (Brackish) need?▾
A minimum of 480 litres (tank length at least 150 cm) is recommended. This provides enough space for both species to establish their own areas and reduces the likelihood of territorial disputes.
What water temperature is best for Bleeding Heart Tetra and Mono Sebae (Brackish) together?▾
Keep the aquarium between 24°C and 28°C. A target of around 26.0°C sits comfortably within both species' preferred ranges.
Are Bleeding Heart Tetra or Mono Sebae (Brackish) aggressive?▾
Bleeding Heart Tetra is peaceful (2/10) and Mono Sebae (Brackish) is generally mild-mannered (4/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do Bleeding Heart Tetra and Mono Sebae (Brackish) need?▾
Their pH requirements do not overlap. Bleeding Heart Tetra prefers 5.5–7.2, while Mono Sebae (Brackish) needs 7.5–8.5. This makes them incompatible in the same water chemistry.
Will Bleeding Heart Tetra nip Mono Sebae (Brackish)'s fins?▾
Bleeding Heart Tetra is a known fin nipper. If Mono Sebae (Brackish) has long or flowing fins, there is a real risk of fin damage. Keeping Bleeding Heart Tetra in a larger group can help redirect nipping behaviour toward conspecifics.
Related Comparisons
Bleeding Heart Tetra & Black Neon Tetra
·
Bleeding Heart Tetra & Black Pacu
·
Bleeding Heart Tetra & Black Skirt Tetra
·
Bleeding Heart Tetra & Blind Cave Tetra
·
Bleeding Heart Tetra & Congo Tetra
·
Bleeding Heart Tetra & Diamond Tetra
·
Mono Sebae (Brackish) & Banded Archerfish (Brackish)
·
Mono Sebae (Brackish) & Black Ghost Knifefish
·
Mono Sebae (Brackish) & Indonesian Datnoid (Tiger Fish)
·
Mono Sebae (Brackish) & Peter's Elephantnose Fish
·
Mono Sebae (Brackish) & Scat (Brackish)
·
Mono Sebae (Brackish) & Fire Eel
·