Can Odessa Barb and Scat (Brackish) Live Together?

🔴Not Recommended

Odessa Barb and Scat (Brackish) are not recommended as tank mates due to incompatible water types. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Odessa Barb

Pethia padamya

Scat (Brackish)

Scatophagus argus

🐠Family Group
Odessa Barb
Cyprinids
Scat (Brackish)
Oddballs
Temperament
Odessa Barb
Mostly Peaceful (3/10)
Scat (Brackish)
Mostly Peaceful (4/10)
Temperature
✓ Compatible
Odessa Barb
16–26°C
Scat (Brackish)
20–28°C
pH Range
✓ Compatible
Odessa Barb
6.5–8.5
Scat (Brackish)
7.5–8.5
Hardness (dGH)
✓ Compatible
Odessa Barb
5–20
Scat (Brackish)
12–30
Water Type
✗ No overlap
Odessa Barb
Freshwater Only
Scat (Brackish)
Brackish Required
Flow Preference
✓ Compatible
Odessa Barb
Moderate
Scat (Brackish)
High
Min Tank Volume
Combined: 540 L
Odessa Barb
80 L
Scat (Brackish)
450 L
Swimming Level
Shared: 2 zones
Odessa Barb
MiddleBottom
Scat (Brackish)
MiddleBottom
🏷️Behavior Tags
Odessa Barb
Hyperactive / Fast SwimmerFin NipperFry Predator
Scat (Brackish)
Plant DestroyerHyperactive / Fast SwimmerAggressive Eater (Starves shy fish)Fin Nipper

Behaviour & Temperament

Odessa Barb is a generally mild-mannered species (3/10), while Scat (Brackish) is generally mild-mannered (4/10). This modest difference means Scat (Brackish) may occasionally assert dominance over Odessa Barb.

Odessa Barb and Scat (Brackish) both frequent the Middle (Open Water) and 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.

Water Parameters

The safe temperature window for both species falls between 20°C and 26°C. Aim for the midpoint of this range (around 23.0°C) for optimal comfort.

Both fish can tolerate a pH between 7.5 and 8.5. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 12–20 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 Odessa Barb and Scat (Brackish) together, plan for an aquarium of at least 540 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, Sand (Sifters), Smooth Gravel (Sensitive Barbels), Established Algae (Otocinclus). Meeting these requirements will help both species thrive.

Note a potential conflict in setup requirements: Scat (Brackish) is a plant destroyer, which conflicts with Odessa Barb'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.

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Frequently Asked Questions

Can Odessa Barb and Scat (Brackish) live together?

No. This combination is not recommended. Key incompatibilities — such as different water type needs — make cohabitation unsafe.

What size tank do Odessa Barb and Scat (Brackish) need?

A minimum of 540 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 Odessa Barb and Scat (Brackish) together?

Keep the aquarium between 20°C and 26°C. A target of around 23.0°C sits comfortably within both species' preferred ranges.

Are Odessa Barb or Scat (Brackish) aggressive?

Odessa Barb is generally mild-mannered (3/10) and Scat (Brackish) is generally mild-mannered (4/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Odessa Barb and Scat (Brackish) need?

Both species overlap in the 7.5–8.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

Will Odessa Barb nip Scat (Brackish)'s fins?

Odessa Barb is a known fin nipper. If Scat (Brackish) has long or flowing fins, there is a real risk of fin damage. Keeping Odessa Barb in a larger group can help redirect nipping behaviour toward conspecifics.


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