Species profile
Bloodfin Tetra
Aphyocharax anisitsi
Peaceful
Easy care
70 L minimum aquarium
4–5 cm adult size
Mid–top
Minimum group: 8
About this species
General notes for hobby use.
Hardy, fast shoaling tetra tolerant of a broad temperature range. Can nip long fins, especially in inadequate groups.
Water parameters
Suggested general range for long-term care.
Temperature
15–28 °C
pH
6–8
GH
Up to 25 dGH
KH
Not yet documented
Flow preference
Moderate
Data confidence
Verified
Behaviour
General behaviour traits used by TanksConnected compatibility checks.
Minimum group size
Minimum group: 8
Tank zone
Mid–top
Territory level
Low
Predation risk
Shrimp fry
Bioload factor
0.8
Active shoaler. Keep in a substantial group and avoid slow long-finned tankmates; otherwise generally community-suitable.
Compatibility flags
Quick cautions for common tank-planning issues.
Fin nipper
Yes / caution
Plant safe
Yes
Shrimp safe
No / caution
Snail safe
Yes
Cave breeder
No
Digs substrate
No
Jump risk
Low
Natural history & care
Research-backed context for long-term aquarium care.
Lifespan
Not yet documented
Diet type
Carnivore
Minimum aquarium volume
70 L
Minimum footprint
60 × 30 cm
Accepted scientific name
Aphyocharax anisitsi
Alternative names
Bloodfin Tetra, Glass Bloodfin Tetra, Aphyocharax affinis, Aphyocharax rubropinnis
Native range
Southern South America, including Argentina, Brazil, Paraguay and Uruguay.
Natural habitat
Open freshwater rivers and associated waters. Provide strong oxygenation, open swimming space and some plant cover.
Diet & feeding
Feeds on worms, small insects and crustaceans; supplement quality dry foods with small frozen/live invertebrates.
Breeding & sexing
Research-backed guidance for identifying sexes and reproductive behaviour.
Sexing
Mature males are slimmer and develop tiny hooks on the anal fin; females are fuller-bodied.
Breeding
Egg-scattering non-guarder; deliberate breeding uses fine plants/mops and removal of adults after spawning.