Can Brevis Shelldweller and Electric Blue Hap Live Together?
Brevis Shelldweller and Electric Blue Hap are not recommended as tank mates due to piscivorous fish will prey on nano-sized tank mates.. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.
At a Glance
Can your tank handle Brevis Shelldweller and Electric Blue Hap?
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
Brevis Shelldweller is a moderately assertive species (5/10), while Electric Blue Hap is semi-aggressive (7/10). This modest difference means Electric Blue Hap may occasionally assert dominance over Brevis Shelldweller.
Brevis Shelldweller and Electric Blue Hap 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 Nano / Bite-sized (Predation Risk) behaviour of one fish directly conflicts with the Piscivore (Eats small/nano fish) trait of the other — piscivorous fish will prey on nano-sized tank mates..
Additional behavioural considerations to keep in mind: Two territorial species may clash over territory, especially in smaller tanks.
Water Parameters
The safe temperature window for both species falls between 24°C and 28°C. Aim for the midpoint of this range (around 26.0°C) for optimal comfort.
Both fish can tolerate a pH between 8 and 8.6. Maintaining a stable value within this band is more important than hitting an exact number.
For general hardness, the shared comfort zone is 10–25 dGH. Regular testing will ensure conditions stay within this range.
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Tank Setup
To house Brevis Shelldweller and Electric Blue Hap together, plan for an aquarium of at least 200 litres with a minimum length of 120 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: Sand (Sifters), Shells (Breeding/Hiding), Smooth Gravel (Sensitive Barbels). 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 Brevis Shelldweller and Electric Blue Hap.
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
125 Gallon Standard
150 Gallon High
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Frequently Asked Questions
Can Brevis Shelldweller and Electric Blue Hap live together?
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do Brevis Shelldweller and Electric Blue Hap need?
A minimum of 200 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 Brevis Shelldweller and Electric Blue Hap together?
Keep the aquarium between 24°C and 28°C. A target of around 26.0°C sits comfortably within both species' preferred ranges.
Are Brevis Shelldweller or Electric Blue Hap aggressive?
Brevis Shelldweller is moderately assertive (5/10) and Electric Blue Hap is semi-aggressive (7/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do Brevis Shelldweller and Electric Blue Hap need?
Both species overlap in the 8–8.6 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
How do I manage Brevis Shelldweller's territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Brevis Shelldweller 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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