Can Severum and White Cloud Mountain Minnow Live Together?

🔴Not Recommended

Severum and White Cloud Mountain Minnow are not recommended as tank mates due to no temperature overlap. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Severum

Heros severus

White Cloud Mountain Minnow

Tanichthys albonubes

🐠Family Group
Severum
Cichlids - South American
White Cloud Mountain Minnow
Cyprinids
Temperament
Severum
Semi-Aggressive (5/10)
White Cloud Mountain Minnow
Peaceful (1/10)
Temperature
✗ No overlap
Severum
24–29°C
White Cloud Mountain Minnow
14–22°C
pH Range
✓ Compatible
Severum
6–7.5
White Cloud Mountain Minnow
6–8
Hardness (dGH)
✓ Compatible
Severum
4–15
White Cloud Mountain Minnow
5–20
Water Type
✓ Compatible
Severum
Freshwater Only
White Cloud Mountain Minnow
Freshwater Only
Flow Preference
✓ Compatible
Severum
Moderate
White Cloud Mountain Minnow
Moderate
Min Tank Volume
Combined: 336 L
Severum
280 L
White Cloud Mountain Minnow
38 L
Swimming Level
Shared: 1 zone
Severum
MiddleBottom
White Cloud Mountain Minnow
TopMiddle
🏷️Behavior Tags
Severum
Plant DestroyerTerritorial (Defends specific area)Digger (Disturbs Substrate)
White Cloud Mountain Minnow
Nano / Bite-sized (Predation Risk)Hyperactive / Fast SwimmerJumper (Lid Required)

Behaviour & Temperament

Severum is a moderately assertive species (5/10), while White Cloud Mountain Minnow is peaceful (1/10). This notable difference means Severum may occasionally assert dominance over White Cloud Mountain Minnow.

Severum and White Cloud Mountain Minnow both frequent the 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.

Worth noting: White Cloud Mountain Minnow is a known jumper, so a tight-fitting lid is essential.

Water Parameters

There is no temperature overlap between Severum (24–29°C) and White Cloud Mountain Minnow (14–22°C). This fundamental mismatch makes long-term cohabitation impractical.

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 Severum and White Cloud Mountain Minnow together, plan for an aquarium of at least 336 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: Driftwood (Digestion/Hiding), Smooth Gravel (Sensitive Barbels), Plants - Densely covered. Meeting these requirements will help both species thrive.

Note a potential conflict in setup requirements: Severum is a plant destroyer, which conflicts with White Cloud Mountain Minnow's requirement for live plants. Compromise where possible or prioritise the more critical need.

Both species do well with moderate (standard) water movement, so a standard filtration setup rated for the tank volume should suffice.

Find the right tank equipment

Browse tanks, décor, and equipment suited for this setup.

Frequently Asked Questions

Can Severum and White Cloud Mountain Minnow live together?

No. This combination is not recommended. Key incompatibilities — such as non-overlapping temperature ranges — make cohabitation unsafe.

What size tank do Severum and White Cloud Mountain Minnow need?

A minimum of 336 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 Severum and White Cloud Mountain Minnow together?

Unfortunately, there is no temperature range that satisfies both species. Severum requires 24–29°C, while White Cloud Mountain Minnow needs 14–22°C.

Are Severum or White Cloud Mountain Minnow aggressive?

Severum is moderately assertive (5/10) and White Cloud Mountain Minnow is peaceful (1/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do Severum and White Cloud Mountain Minnow 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 Severum's territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Severum 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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