Can Badis (Chameleon Fish) and Figure 8 Puffer (Brackish) Live Together?
Badis (Chameleon Fish) and Figure 8 Puffer (Brackish) are not recommended as tank mates due to incompatible water types. 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 Badis (Chameleon Fish) and Figure 8 Puffer (Brackish)?
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.
Shared setup supplies
We may earn from qualifying purchases
Behaviour & Temperament
Badis (Chameleon Fish) is a moderately assertive species (5/10), while Figure 8 Puffer (Brackish) is semi-aggressive (8/10). This modest difference means Figure 8 Puffer (Brackish) may occasionally assert dominance over Badis (Chameleon Fish).
Badis (Chameleon Fish) and Figure 8 Puffer (Brackish) both frequent the Bottom (Substrate) and 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: Aggressive fish may bully and stress shy, slow-moving species. Hyperactive swimmers can stress shy, slow-moving species through constant motion. 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 25°C. Aim for the midpoint of this range (around 24.5°C) for optimal comfort.
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 10–15 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.
Water care products
We may earn from qualifying purchases
Tank Setup
To house Badis (Chameleon Fish) and Figure 8 Puffer (Brackish) together, plan for an aquarium of at least 62 litres with a minimum length of 60 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), Plants - Densely covered, Driftwood (Digestion/Hiding), Leaf Litter/Blackwater, Shells (Breeding/Hiding). Meeting these requirements will help both species thrive.
Both species do well with low (still water) water movement, so a standard filtration setup rated for the tank volume should suffice.
Suitable Tank Sizes
Standard aquarium sizes large enough for both Badis (Chameleon Fish) and Figure 8 Puffer (Brackish).
20 Gallon High
20 Gallon Long
29 Gallon Standard
30 Gallon Breeder
36 Gallon Bowfront
40 Gallon Breeder
Show 19 more tank sizes
Feeding products to consider
We may earn from qualifying purchases
.webp?2026-04-25T14%3A35%3A38.022Z)
Frequently Asked Questions
Can Badis (Chameleon Fish) and Figure 8 Puffer (Brackish) live together?
No. This combination is not recommended. Key incompatibilities — such as different water type needs — make cohabitation unsafe.
What size tank do Badis (Chameleon Fish) and Figure 8 Puffer (Brackish) need?
A minimum of 62 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 Badis (Chameleon Fish) and Figure 8 Puffer (Brackish) together?
Keep the aquarium between 24°C and 25°C. A target of around 24.5°C sits comfortably within both species' preferred ranges.
Are Badis (Chameleon Fish) or Figure 8 Puffer (Brackish) aggressive?
Badis (Chameleon Fish) is moderately assertive (5/10) and Figure 8 Puffer (Brackish) is semi-aggressive (8/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do Badis (Chameleon Fish) and Figure 8 Puffer (Brackish) 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 Badis (Chameleon Fish)'s fins?
Figure 8 Puffer (Brackish) is a known fin nipper. If Badis (Chameleon Fish) 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 Badis (Chameleon Fish)'s territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Badis (Chameleon Fish) 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.
Related Comparisons
Badis (Chameleon Fish) & Scarlet Badis
·
Badis (Chameleon Fish) & Bluegill Sunfish
·
Badis (Chameleon Fish) & African Clawed Frog
·
Badis (Chameleon Fish) & Banded Chromide
·
Badis (Chameleon Fish) & African Dwarf Frog
·
Badis (Chameleon Fish) & Amazon Leaf Fish
·
Figure 8 Puffer (Brackish) & Green Spotted Puffer (Brackish)
·
Figure 8 Puffer (Brackish) & Fahaka Puffer
·
Figure 8 Puffer (Brackish) & Mbu Puffer
·
Figure 8 Puffer (Brackish) & Arrowhead Puffer
·
Figure 8 Puffer (Brackish) & Dwarf Pea Puffer
·
Figure 8 Puffer (Brackish) & Amazon Puffer
·