Can American Grass Shrimp and Cardinal Shrimp (Sulawesi) Live Together?
Keeping American Grass Shrimp and Cardinal Shrimp (Sulawesi) together is possible but requires caution due to potential behavioral clashes. Provide a spacious tank of at least 38 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.
At a Glance
Can your tank handle American Grass Shrimp and Cardinal Shrimp (Sulawesi)?
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.
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Behaviour & Temperament
American Grass Shrimp is a peaceful species (1/10), while Cardinal Shrimp (Sulawesi) is peaceful (0/10). This modest difference means American Grass Shrimp may occasionally assert dominance over Cardinal Shrimp (Sulawesi).
American Grass Shrimp and Cardinal Shrimp (Sulawesi) both frequent the 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.
Additional behavioural considerations to keep in mind: Hyperactive swimmers can stress shy, slow-moving species through constant motion.
Worth noting: American Grass Shrimp 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.
Water Parameters
The safe temperature window for both species falls between 26°C and 28°C. Aim for the midpoint of this range (around 27.0°C) for optimal comfort.
Both fish can tolerate a pH between 7.5 and 8. Maintaining a stable value within this band is more important than hitting an exact number.
For general hardness, the shared comfort zone is 4–8 dGH. Regular testing will ensure conditions stay within this range.
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Tank Setup
To house American Grass Shrimp and Cardinal Shrimp (Sulawesi) together, plan for an aquarium of at least 38 litres with a minimum length of 40 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.
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 - Densely covered, Leaf Litter/Blackwater, Established Algae (Otocinclus), Smooth Gravel (Sensitive Barbels), 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.
Suitable Tank Sizes
Standard aquarium sizes large enough for both American Grass Shrimp and Cardinal Shrimp (Sulawesi).
10 Gallon Standard
15 Gallon Standard
20 Gallon High
20 Gallon Long
29 Gallon Standard
30 Gallon Breeder
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Frequently Asked Questions
Can American Grass Shrimp and Cardinal Shrimp (Sulawesi) live together?
They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 38 litres), plenty of hiding spots, and watch for signs of stress or aggression.
What size tank do American Grass Shrimp and Cardinal Shrimp (Sulawesi) need?
A minimum of 38 litres (tank length at least 40 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 American Grass Shrimp and Cardinal Shrimp (Sulawesi) together?
Keep the aquarium between 26°C and 28°C. A target of around 27.0°C sits comfortably within both species' preferred ranges.
Are American Grass Shrimp or Cardinal Shrimp (Sulawesi) aggressive?
American Grass Shrimp is peaceful (1/10) and Cardinal Shrimp (Sulawesi) is peaceful (0/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do American Grass Shrimp and Cardinal Shrimp (Sulawesi) need?
Both species overlap in the 7.5–8 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
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