How to keep it properly
Cardinals thrive in mature, biologically stable aquariums with excellent oxygenation, tannin-stained water, and larger groups that spread confidence through the shoal.
Fish profile
Cardinal Tetra
A more heat-loving and demanding Amazon tetra with saturated colour and a strong preference for soft water.
AmazonSoft waterDisplaySchooling
What to feed and how to condition
Use premium micro pellets, frozen bloodworm, mosquito larvae, and quality live foods to maintain body depth and colour.
Where it fits
Best with discus, peaceful angelfish in spacious tanks, dwarf cichlids, hatchetfish, and gentle catfish.
What breeding really asks of you
Breeding is specialist work: very low hardness, darkness, and tiny live foods are essential.
Related species
Keep researching before you stock
CHARACIN
Neon Tetra
A classic shoaling tetra that looks best in dark, planted layouts with gentle flow and stable water.
FishBeginnerPeaceful schooling fish
- Tank
- 60 L+
- Temp
- 22-26 C
- pH
- 6.0-7.2
- School
- 10+
CYPRINID
Harlequin Rasbora
A dependable Southeast Asian shoaler that suits planted community aquariums and mixed nano displays.
FishBeginnerCalm schooling fish
- Tank
- 70 L+
- Temp
- 23-27 C
- pH
- 6.0-7.5
- School
- 8+
CYPRINID
Celestial Pearl Danio
A jewel-like microfish for dense aquascapes, cooler tropical setups, and calm companion species.
FishIntermediatePeaceful but shy
- Tank
- 45 L+
- Temp
- 20-25 C
- pH
- 6.5-7.5
- School
- 12+