Can Red Tupfel Shrimp and Scat (Brackish) Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 11, 2026
Not Recommended

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


At a Glance

Red Tupfel Shrimp

Caridina serrata

Scat (Brackish)

Scatophagus argus

🐠Family Group
Red Tupfel Shrimp
Invertebrates
Scat (Brackish)
Oddballs
Temperament
Red Tupfel Shrimp
Peaceful (0/10)
Scat (Brackish)
Mostly Peaceful (4/10)
Temperature
✓ Compatible
Red Tupfel Shrimp
18–25°C
Scat (Brackish)
20–28°C
pH Range
✓ Compatible
Red Tupfel Shrimp
6–7.5
Scat (Brackish)
7.5–8.5
Hardness (dGH)
✗ No overlap
Red Tupfel Shrimp
4–10
Scat (Brackish)
12–30
Water Type
✗ No overlap
Red Tupfel Shrimp
Freshwater Only
Scat (Brackish)
Brackish Required
Flow Preference
✗ No overlap
Red Tupfel Shrimp
Low
Scat (Brackish)
High
Min Tank Volume
Combined: 450 L
Red Tupfel Shrimp
19 L
Scat (Brackish)
450 L
Swimming Level
Shared: 2 zones
Red Tupfel Shrimp
BottomMiddle
Scat (Brackish)
MiddleBottom
🏷️Behavior Tags
Red Tupfel Shrimp
Nano / Bite-sized (Predation Risk)Hyperactive / Fast Swimmer
Scat (Brackish)
Plant DestroyerHyperactive / Fast SwimmerAggressive Eater (Starves shy fish)Fin Nipper
Stocking calculator

Can your tank handle Red Tupfel Shrimp and Scat (Brackish)?

Compatibility is only part of the answer. Test both fish with your real tank size, current stock, and maintenance needs to see if you have enough space and a safe stocking level before you add them.

Red Tupfel Shrimp
Scat (Brackish)
Test both in my tank

Behaviour & Temperament

Red Tupfel Shrimp is a peaceful species (0/10), while Scat (Brackish) is generally mild-mannered (4/10). This notable difference means Scat (Brackish) may occasionally assert dominance over Red Tupfel Shrimp.

Red Tupfel Shrimp and Scat (Brackish) both frequent the Bottom (Substrate) and 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 20°C and 25°C. Aim for the midpoint of this range (around 22.5°C) for optimal comfort.

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

Hardness requirements are incompatible: Red Tupfel Shrimp needs 4–10 dGH while Scat (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.

Tank Setup

To house Red Tupfel Shrimp and Scat (Brackish) together, plan for an aquarium of at least 450 litres with a minimum length of 150 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: Established Algae (Otocinclus), Plants - Densely covered, Leaf Litter/Blackwater, Sand (Sifters), Smooth Gravel (Sensitive Barbels). Meeting these requirements will help both species thrive.

Note a potential conflict in setup requirements: Scat (Brackish) is a plant destroyer, which conflicts with Red Tupfel Shrimp's requirement for live plants. Compromise where possible or prioritise the more critical need.

Red Tupfel Shrimp prefers Low (Still Water) flow while Scat (Brackish) needs High (River/Stream) flow. Consider positioning filter outlets and using baffles to create zones of different current intensity within the same tank.

Why This Pairing Usually Fails in Practice

Red Tupfel Shrimp and Scat (Brackish) are the kind of pair that can look acceptable in a shop but become a maintenance problem at home. The main risk is not a single number in the chart; it is the way incompatible behavior, water needs, or pressure on space compounds over time once both fish are established in the same tank.

Suitable Tank Sizes

Standard aquarium sizes large enough for both Red Tupfel Shrimp and Scat (Brackish).

Frequently Asked Questions

Can Red Tupfel Shrimp 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 Red Tupfel Shrimp and Scat (Brackish) need?

A minimum of 450 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 Red Tupfel Shrimp and Scat (Brackish) together?

Keep the aquarium between 20°C and 25°C. A target of around 22.5°C sits comfortably within both species' preferred ranges.

Are Red Tupfel Shrimp or Scat (Brackish) aggressive?

Red Tupfel Shrimp is peaceful (0/10) and Scat (Brackish) is generally mild-mannered (4/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do Red Tupfel Shrimp and Scat (Brackish) need?

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

Will Scat (Brackish) nip Red Tupfel Shrimp's fins?

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

Editorial Review

Guidarium Editorial Desk

Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.

Last reviewed
May 11, 2026
Last updated
May 11, 2026
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