Can Figure 8 Puffer (Brackish) and White Cloud Mountain Minnow Live Together?
Figure 8 Puffer (Brackish) and White Cloud Mountain Minnow are not recommended as tank mates due to incompatible water types and 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
Behaviour & Temperament
Figure 8 Puffer (Brackish) is a semi-aggressive species (8/10), while White Cloud Mountain Minnow is peaceful (1/10). This notable difference means Figure 8 Puffer (Brackish) may occasionally assert dominance over White Cloud Mountain Minnow.
Large aggression gap (7 points) between Figure 8 Puffer (Brackish) and White Cloud Mountain Minnow increases stress risk for the more peaceful fish.
Figure 8 Puffer (Brackish) 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.
Additional behavioural considerations to keep in mind: Shrimp eaters may also prey on very small nano fish.
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 Figure 8 Puffer (Brackish) (24–28°C) and White Cloud Mountain Minnow (14–22°C). This fundamental mismatch makes long-term cohabitation impractical.
Both fish can tolerate a pH between 7.5 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 10–20 dGH. Regular testing will ensure conditions stay within this range.
Crucially, these species require different water types — one needs freshwater while the other requires brackish conditions. This is a hard barrier to keeping them together. An aquarium test kit is recommended for monitoring.
Tank Setup
To house Figure 8 Puffer (Brackish) and White Cloud Mountain Minnow together, plan for an aquarium of at least 72 litres with a minimum length of 60 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: Sand (Sifters), Shells (Breeding/Hiding), Plants - Densely covered, 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.
Find the right tank equipment
Browse tanks, décor, and equipment suited for this setup.
Diet & Feeding
Feeding time deserves special attention with this pairing. Figure 8 Puffer (Brackish) is a known shrimp eater and may prey on small invertebrates or nano fish like White Cloud Mountain Minnow.
Frequently Asked Questions
Can Figure 8 Puffer (Brackish) and White Cloud Mountain Minnow live together?▾
No. This combination is not recommended. Key incompatibilities — such as different water type needs — make cohabitation unsafe.
What size tank do Figure 8 Puffer (Brackish) and White Cloud Mountain Minnow need?▾
A minimum of 72 litres (tank length at least 60 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 Figure 8 Puffer (Brackish) and White Cloud Mountain Minnow together?▾
Unfortunately, there is no temperature range that satisfies both species. Figure 8 Puffer (Brackish) requires 24–28°C, while White Cloud Mountain Minnow needs 14–22°C.
Are Figure 8 Puffer (Brackish) or White Cloud Mountain Minnow aggressive?▾
Figure 8 Puffer (Brackish) is semi-aggressive (8/10) 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 Figure 8 Puffer (Brackish) and White Cloud Mountain Minnow need?▾
Both species overlap in the 7.5–8 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
Will Figure 8 Puffer (Brackish) nip White Cloud Mountain Minnow's fins?▾
Figure 8 Puffer (Brackish) is a known fin nipper. If White Cloud Mountain Minnow has long or flowing fins, there is a real risk of fin damage. Keeping Figure 8 Puffer (Brackish) in a larger group can help redirect nipping behaviour toward conspecifics.
How do I manage Figure 8 Puffer (Brackish)'s territorial behaviour?▾
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Figure 8 Puffer (Brackish) 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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