Can Cherry Barb and Chinese Algae Eater (CAE) Live Together?
Cherry Barb and Chinese Algae Eater (CAE) are not recommended as tank mates due to slime coat eaters target slow-moving fish, causing severe stress and health issues.. 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
Cherry Barb is a peaceful species (2/10), while Chinese Algae Eater (CAE) is semi-aggressive (8/10). This notable difference means Chinese Algae Eater (CAE) may occasionally assert dominance over Cherry Barb.
Large aggression gap (6 points) between Cherry Barb and Chinese Algae Eater (CAE) increases stress risk for the more peaceful fish.
Cherry Barb and Chinese Algae Eater (CAE) 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.
There is a critical concern: the Shy / Slow Moving (Easily Stressed) behaviour of one fish directly conflicts with the Slime Coat Eater (Attacks Flat Fish) trait of the other — slime coat eaters target slow-moving fish, causing severe stress and health issues..
Additional behavioural considerations to keep in mind: Aggressive fish may bully and stress shy, slow-moving species. Hyperactive swimmers can stress shy, slow-moving species through constant motion.
Water Parameters
The safe temperature window for both species falls between 23°C and 27°C. Aim for the midpoint of this range (around 25.0°C) for optimal comfort.
Both fish can tolerate a pH between 6 and 7.5. Maintaining a stable value within this band is more important than hitting an exact number.
For general hardness, the shared comfort zone is 5–15 dGH. Regular testing will ensure conditions stay within this range. An aquarium test kit is recommended for monitoring.
Tank Setup
To house Cherry Barb and Chinese Algae Eater (CAE) together, plan for an aquarium of at least 240 litres with a minimum length of 120 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, Leaf Litter/Blackwater, Smooth Gravel (Sensitive Barbels). Meeting these requirements will help both species thrive.
Cherry Barb prefers Low (Still Water) flow while Chinese Algae Eater (CAE) needs High (River/Stream) flow. Consider positioning filter outlets and using baffles to create zones of different current intensity within the same tank.
Find the right tank equipment
Browse tanks, décor, and equipment suited for this setup.
Frequently Asked Questions
Can Cherry Barb and Chinese Algae Eater (CAE) live together?▾
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do Cherry Barb and Chinese Algae Eater (CAE) need?▾
A minimum of 240 litres (tank length at least 120 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 Cherry Barb and Chinese Algae Eater (CAE) together?▾
Keep the aquarium between 23°C and 27°C. A target of around 25.0°C sits comfortably within both species' preferred ranges.
Are Cherry Barb or Chinese Algae Eater (CAE) aggressive?▾
Cherry Barb is peaceful (2/10) and Chinese Algae Eater (CAE) is semi-aggressive (8/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.
What pH do Cherry Barb and Chinese Algae Eater (CAE) need?▾
Both species overlap in the 6–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
How do I manage Chinese Algae Eater (CAE)'s territorial behaviour?▾
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Chinese Algae Eater (CAE) space to claim a territory without encroaching on the other fish's area. Adding décor that divides the tank into distinct zones works especially well.
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