Can Bee Shrimp (Crystal Red / Black) and Least Killifish (Heterandria) Live Together?
Bee Shrimp (Crystal Red / Black) and Least Killifish (Heterandria) are not recommended as tank mates due to 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
Bee Shrimp (Crystal Red / Black) is a peaceful species (0/10), while Least Killifish (Heterandria) is peaceful (1/10). This modest difference means Least Killifish (Heterandria) may occasionally assert dominance over Bee Shrimp (Crystal Red / Black).
Bee Shrimp (Crystal Red / Black) and Least Killifish (Heterandria) 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.
Additional behavioural considerations to keep in mind: Hyperactive swimmers can stress shy, slow-moving species through constant motion.
Water Parameters
The safe temperature window for both species falls between 18°C and 24°C. Aim for the midpoint of this range (around 21.0°C) for optimal comfort.
The pH requirements of Bee Shrimp (Crystal Red / Black) (5.5–6.8) and Least Killifish (Heterandria) (7–8) do not overlap, making it impossible to satisfy both species simultaneously.
For general hardness, the shared comfort zone is 5–6 dGH. Regular testing will ensure conditions stay within this range. An aquarium test kit is recommended for monitoring.
Tank Setup
To house Bee Shrimp (Crystal Red / Black) and Least Killifish (Heterandria) together, plan for an aquarium of at least 23 litres with a minimum length of 30 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: Soil / Nutrient Rich, Plants - Densely covered, Driftwood (Digestion/Hiding), Leaf Litter/Blackwater, Established Algae (Otocinclus), Plants - Floating. Meeting these requirements will help both species thrive.
Both species do well with low (still water) water movement, so a standard filtration setup rated for the tank volume should suffice.
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Frequently Asked Questions
Can Bee Shrimp (Crystal Red / Black) and Least Killifish (Heterandria) live together?▾
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do Bee Shrimp (Crystal Red / Black) and Least Killifish (Heterandria) need?▾
A minimum of 23 litres (tank length at least 30 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 Bee Shrimp (Crystal Red / Black) and Least Killifish (Heterandria) together?▾
Keep the aquarium between 18°C and 24°C. A target of around 21.0°C sits comfortably within both species' preferred ranges.
Are Bee Shrimp (Crystal Red / Black) or Least Killifish (Heterandria) aggressive?▾
Bee Shrimp (Crystal Red / Black) is peaceful (0/10) and Least Killifish (Heterandria) is peaceful (1/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do Bee Shrimp (Crystal Red / Black) and Least Killifish (Heterandria) need?▾
Their pH requirements do not overlap. Bee Shrimp (Crystal Red / Black) prefers 5.5–6.8, while Least Killifish (Heterandria) needs 7–8. This makes them incompatible in the same water chemistry.
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