Can Amazon Leaf Fish and Scarlet Badis Live Together?

🔴Not Recommended

Amazon Leaf Fish and Scarlet Badis 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

Amazon Leaf Fish

Monocirrhus polyacanthus

Scarlet Badis

Dario dario

🐟Family Group
Amazon Leaf Fish
Other
Scarlet Badis
Other
Temperament
Amazon Leaf Fish
Peaceful (2/10)
Scarlet Badis
Mostly Peaceful (3/10)
Temperature
✓ Compatible
Amazon Leaf Fish
23–29°C
Scarlet Badis
18–26°C
pH Range
✓ Compatible
Amazon Leaf Fish
5–6.8
Scarlet Badis
6.5–8.5
Hardness (dGH)
✓ Compatible
Amazon Leaf Fish
0–8
Scarlet Badis
4–20
Water Type
✓ Compatible
Amazon Leaf Fish
Freshwater Only
Scarlet Badis
Freshwater Only
Flow Preference
✓ Compatible
Amazon Leaf Fish
Low
Scarlet Badis
Low
Min Tank Volume
Combined: 90 L
Amazon Leaf Fish
75 L
Scarlet Badis
20 L
Swimming Level
Shared: 1 zone
Amazon Leaf Fish
MiddleTop
Scarlet Badis
MiddleBottom
🏷️Behavior Tags
Amazon Leaf Fish
Piscivore (Eats small/nano fish)Shrimp EaterFry PredatorShy / Slow Moving (Easily Stressed)Nocturnal
Scarlet Badis
Nano / Bite-sized (Predation Risk)Shrimp EaterFry PredatorShy / Slow Moving (Easily Stressed)Aggressive to same species/look-alikesTerritorial (Defends specific area)

Behaviour & Temperament

Amazon Leaf Fish is a peaceful species (2/10), while Scarlet Badis is generally mild-mannered (3/10). This modest difference means Scarlet Badis may occasionally assert dominance over Amazon Leaf Fish.

Amazon Leaf Fish and Scarlet Badis 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.

There is a critical concern: the Piscivore (Eats small/nano fish) behaviour of one fish directly conflicts with the Nano / Bite-sized (Predation Risk) trait of the other — piscivorous fish will prey on nano-sized tank mates..

Additional behavioural considerations to keep in mind: Shrimp eaters may also prey on very small nano fish.

Worth noting: Amazon Leaf Fish is nocturnal and will be most active after lights-out, naturally reducing daytime encounters.

Water Parameters

The safe temperature window for both species falls between 23°C and 26°C. Aim for the midpoint of this range (around 24.5°C) for optimal comfort.

Both fish can tolerate a pH between 6.5 and 6.8. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 4–8 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Amazon Leaf Fish and Scarlet Badis together, plan for an aquarium of at least 90 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: Leaf Litter/Blackwater, Plants - Densely covered, Driftwood (Digestion/Hiding), Plants - Floating, Plants - lighly covered, Sand (Sifters). 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.

Diet & Feeding

Feeding time deserves special attention with this pairing. Amazon Leaf Fish is a known shrimp eater and may prey on small invertebrates or nano fish like Scarlet Badis.

Frequently Asked Questions

Can Amazon Leaf Fish and Scarlet Badis live together?

No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.

What size tank do Amazon Leaf Fish and Scarlet Badis need?

A minimum of 90 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 Amazon Leaf Fish and Scarlet Badis together?

Keep the aquarium between 23°C and 26°C. A target of around 24.5°C sits comfortably within both species' preferred ranges.

Are Amazon Leaf Fish or Scarlet Badis aggressive?

Amazon Leaf Fish is peaceful (2/10) and Scarlet Badis is generally mild-mannered (3/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Amazon Leaf Fish and Scarlet Badis need?

Both species overlap in the 6.5–6.8 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

How do I manage Scarlet Badis's territorial behaviour?

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

Does Amazon Leaf Fish being nocturnal affect compatibility?

Amazon Leaf Fish is most active after lights-out, which naturally reduces daytime encounters with its tank mate. This can actually be beneficial, as both fish get undisturbed time to feed and explore. Just ensure food reaches Amazon Leaf Fish during evening hours.


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