Can Chinese Algae Eater (CAE) and Dwarf Pea Puffer Live Together?
Keeping Chinese Algae Eater (CAE) and Dwarf Pea Puffer together is possible but requires caution due to potential behavioral clashes and mismatched flow preferences. Provide a spacious tank of at least 240 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.
At a Glance
Behaviour & Temperament
Both Chinese Algae Eater (CAE) and Dwarf Pea Puffer are semi-aggressive species with an aggression score of 8/10. Their matching temperaments mean neither fish is likely to dominate the other in a shared aquarium.
Both Chinese Algae Eater (CAE) and Dwarf Pea Puffer are highly aggressive, increasing the risk of violent confrontations.
Chinese Algae Eater (CAE) and Dwarf Pea Puffer 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: Two territorial species may clash over territory, especially in smaller tanks.
To improve the chances of a peaceful coexistence in this community tank: Provide a significantly larger tank (at least 50% more volume than the minimum) to allow both Chinese Algae Eater (CAE) and Dwarf Pea Puffer to establish separate territories. Add plenty of line-of-sight breaks using driftwood, rocks, and dense planting to reduce territorial confrontations. Keep fin nippers in larger groups to distribute nipping behaviour among conspecifics rather than tank mates.
Water Parameters
The safe temperature window for both species falls between 22°C and 28°C. Aim for the midpoint of this range (around 25.0°C) for optimal comfort.
Both fish can tolerate a pH between 6.5 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 5–15 dGH. Regular testing will ensure conditions stay within this range.
Tank Setup
To house Chinese Algae Eater (CAE) and Dwarf Pea Puffer 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.
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: Smooth Gravel (Sensitive Barbels), Plants - Densely covered, Sand (Sifters). Meeting these requirements will help both species thrive.
Chinese Algae Eater (CAE) prefers High (River/Stream) flow while Dwarf Pea Puffer needs Low (Still Water) flow. Consider positioning filter outlets and using baffles to create zones of different current intensity within the same tank.
Frequently Asked Questions
Can Chinese Algae Eater (CAE) and Dwarf Pea Puffer live together?▾
They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 240 litres), plenty of hiding spots, and watch for signs of stress or aggression.
What size tank do Chinese Algae Eater (CAE) and Dwarf Pea Puffer 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 Chinese Algae Eater (CAE) and Dwarf Pea Puffer together?▾
Keep the aquarium between 22°C and 28°C. A target of around 25.0°C sits comfortably within both species' preferred ranges.
Are Chinese Algae Eater (CAE) or Dwarf Pea Puffer aggressive?▾
Chinese Algae Eater (CAE) is semi-aggressive (8/10) and Dwarf Pea Puffer is semi-aggressive (8/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do Chinese Algae Eater (CAE) and Dwarf Pea Puffer need?▾
Both species overlap in the 6.5–8 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
Will Dwarf Pea Puffer nip Chinese Algae Eater (CAE)'s fins?▾
Dwarf Pea Puffer is a known fin nipper. If Chinese Algae Eater (CAE) has long or flowing fins, there is a real risk of fin damage. Keeping Dwarf Pea Puffer in a larger group can help redirect nipping behaviour toward conspecifics.
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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