Can Apistogramma baenschi (Inca 50) and Figure 8 Puffer (Brackish) Live Together?
Apistogramma baenschi (Inca 50) and Figure 8 Puffer (Brackish) are not recommended as tank mates due to incompatible water types and conflicting pH requirements and incompatible hardness ranges. 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 Apistogramma baenschi (Inca 50) 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
Apistogramma baenschi (Inca 50) 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 Apistogramma baenschi (Inca 50).
Apistogramma baenschi (Inca 50) and Figure 8 Puffer (Brackish) 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: 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 26°C. Aim for the midpoint of this range (around 25.0°C) for optimal comfort.
The pH requirements of Apistogramma baenschi (Inca 50) (4–6.5) and Figure 8 Puffer (Brackish) (7.5–8.5) do not overlap, making it impossible to satisfy both species simultaneously.
Hardness requirements are incompatible: Apistogramma baenschi (Inca 50) needs 1–5 dGH while Figure 8 Puffer (Brackish) requires 10–25 dGH.
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 Apistogramma baenschi (Inca 50) 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), Leaf Litter/Blackwater, Driftwood (Digestion/Hiding), 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 Apistogramma baenschi (Inca 50) 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 Apistogramma baenschi (Inca 50) 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 Apistogramma baenschi (Inca 50) 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 Apistogramma baenschi (Inca 50) and Figure 8 Puffer (Brackish) together?
Keep the aquarium between 24°C and 26°C. A target of around 25.0°C sits comfortably within both species' preferred ranges.
Are Apistogramma baenschi (Inca 50) or Figure 8 Puffer (Brackish) aggressive?
Apistogramma baenschi (Inca 50) 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 Apistogramma baenschi (Inca 50) and Figure 8 Puffer (Brackish) need?
Their pH requirements do not overlap. Apistogramma baenschi (Inca 50) prefers 4–6.5, while Figure 8 Puffer (Brackish) needs 7.5–8.5. This makes them incompatible in the same water chemistry.
Will Figure 8 Puffer (Brackish) nip Apistogramma baenschi (Inca 50)'s fins?
Figure 8 Puffer (Brackish) is a known fin nipper. If Apistogramma baenschi (Inca 50) 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 Apistogramma baenschi (Inca 50)'s territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Apistogramma baenschi (Inca 50) 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
Apistogramma baenschi (Inca 50) & Aequidens diadema (Diadem Cichlid)
·
Apistogramma baenschi (Inca 50) & Aequidens sp. Atabapo
·
Apistogramma baenschi (Inca 50) & Agassiz's Dwarf Cichlid
·
Apistogramma baenschi (Inca 50) & Apistogramma atahualpa
·
Apistogramma baenschi (Inca 50) & Apistogramma Black-Chin
·
Apistogramma baenschi (Inca 50) & Apistogramma borellii (Umbrella Cichlid)
·
Figure 8 Puffer (Brackish) & Ceylon Puffer (Brackish)
·
Figure 8 Puffer (Brackish) & Green Spotted Puffer (Brackish)
·
Figure 8 Puffer (Brackish) & Fahaka Puffer
·
Figure 8 Puffer (Brackish) & Mbu Puffer
·
Figure 8 Puffer (Brackish) & Abei Puffer
·
Figure 8 Puffer (Brackish) & Arrowhead Puffer
·