Best for
Aquariums where its role fits: community fish.
B
Fish · Freshwater
Butterfly splitfin
Ameca splendens
Butterfly splitfin is a popular community aquarium fish.
Difficulty
Beginner
Aggression
4/10
Schooling
Yes
Size
5.00 cm
Minimum volume
40 L
Temperature
22.0-28.0 ºC
Zone
Midwater
Lifespan
5 years
Quick profile scan
fish
Territoriality
Medium
Aggression
4/10
Activity
Moderate
Thermal sensitivity
Medium
Bioload
High
Speed
Moderate
Predation risk
Opportunistic
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Quick verdict
A practical summary to quickly decide whether it fits your aquarium.
Typical risk
Bioload and adult volume should be planned with margin.
Aquarium zone
Where it lives best
Surface
Midwater
primary
Bottom
Quick compatibility
Community signals
Shrimp
Conditional
Snails
Compatible
Slow fish
Compatible
Aggressive fish
Conditional
Small fish
Conditional
Large fish
Compatible
Delicate plants
Conditional
Buying decision
Before buying Butterfly splitfin
Review these points before adding it to your aquarium. They are practical notes based on its profile, ecological data, and known relationships.
L
Adult volume
Make sure your aquarium is above 40 L before buying it.
G
Minimum group
Do not keep it alone if it needs a group; plan space for the right number of individuals.
B
Bioload
Plan filtration, water changes, and total stocking: this species can heavily load the system.
Parameters
Water conditions
pH
6.5 - 7.5
GH
5 - 15
KH
3 - 10
Temperature
22.0 - 28.0 ºC
Growth and behavior
Juvenile to adult
Juvenile
As a juvenile it is usually more flexible and less dominant than an adult. Even so, it benefits from cover, stable parameters and tank mates that do not compete intensely in the midwater area.
Shift
The transition to adulthood usually brings more stable behavior when group size, space and parameters are suitable.
Adult
As an adult it behaves as a community fish and needs space, tank mates and activity level to be well balanced. Its impact increases when bioload or competition is high.
Ecological profile
Role and biological pressure
Community Fish
Community Fish
Medium
High
Moderate
Opportunistic
Profile: community fish, with high bioload and primary use of the midwater area. It can adapt to calm communities, although it usually behaves better with compatible companions. It may show opportunistic predation toward fry or very small animals.
Ecological radar
profile
Territoriality
52%
Aggression
40%
Activity
52%
Thermal sensitivity
52%
Bioload
78%
Common mistakes
What to avoid
Keeping it in tanks below the recommended adult volume.
Keeping too few individuals for a social species.
Essential care
Keep in groups of at least 6 specimens. It prefers tanks with open swimming space, some current and weekly water changes.
Daily time
10 min
Related biomes
Breeding
It is an egg-laying fish and relatively easy to breed. It scatters eggs among plants or over the substrate and provides no parental care.
Oviparous
Easy
Hembras más redondeadas y robustas. Machos más esbeltos y algo más amarillentos.
Alerts and health
- Mantener en grupo
- Espacio para nadar
- Acuario tapado
- Corriente suave a moderada
Common issues
Ich
Podredumbre de aletas
Parásitos externos
Expert notes
Interesting details
01
Es una de las especies más usadas en investigación biomédica
02
Sus rayas permanecen visibles durante toda la vida
03
Es un pez muy activo y gregario
Editorial confidence
Last review: June 2026
Content based on parameters, ecological profiles and manual relationships.
Profile data
Ecological profile
Manual relationships
General aquarium observation
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