+
.png){kind=logo}
Few fish command a room like an angelfish. That diamond-shaped body, those long wing-like fins — the moment one glides into a planted tank, everything else becomes background. Angelfish are the emblem species of the Amazon basin, and for many keepers they are the milestone fish: the step from beginner to something more serious.
But here is what the elegance hides. Angelfish are cichlids, and cichlids have instincts: territorial behavior, a predator's opportunism, and a pair-bonding fierceness that can surprise you. They are not difficult — they are just specific.
Few fish command a room like an angelfish. That diamond-shaped body, those long wing-like fins — the moment one glides into a planted tank, everything else becomes background. Angelfish are the emblem species of the Amazon basin, and for many keepers they are the milestone fish: the step from beginner to something more serious.
But here is what the elegance hides. Angelfish are cichlids, and cichlids have instincts: territorial behavior, a predator's opportunism, and a pair-bonding fierceness that can surprise you. They are not difficult — they are just specific.
| Species | Notes | For beginners? |
|---|---|---|
| Pterophyllum scalare (common angelfish) | Most store-bought varieties belong here; captive-bred lines far more tolerant of water swings | Yes — start here |
| P. altum | Tallest and most demanding; softer water, taller tank, often wild-imported with higher mortality | No — experienced hands only |
| P. leopoldi | Smaller, shorter-finned, rarely seen in shops | Rarely available |
Adults reach about 15 cm in body length, with fins stretching to 20 cm tall. Under good care they live 8 to 12 years — this is a pet, not a decoration.
Start with hardy domestic lines:
| Variety | Description |
|---|---|
| Marble | Broken black-and-white patterning, extremely tolerant |
| Gold | Glows against green plants, gentle temperament |
| Black | Sleek and striking |
| Zebra | Closest to the wild silver-with-stripes look, fully adapted to tank life |
Skip pricey long-fin veil varieties at first — their flowing fins swim poorly and make them sensitive to current and tank mates.
Angelfish swim vertically, so height matters as much as footprint. Aim for a tall tank of at least 200 liters (55 gallons); a group of 4–6 needs more room to keep territorial stress down. For choosing the tank itself, see choosing your first (or next) aquarium: a complete guide.
| Parameter | Target |
|---|---|
| Temperature | 26–30°C — stability matters more than the exact number; use a heater in winter |
| pH | 6.0–8.0, ideally 6.8–7.8; captive-bred fish adapt well, softer water feels like home |
| Maintenance | 20–30% water changes weekly with good filtration |
Keep the routine simple afterwards: the lazy keeper's guide to a clean aquarium.
Recreate their slow-moving, plant-rich home: tall plants like Java fern, vertical driftwood pieces for cover, gentle water flow, and fine-to-medium substrate for comfortable foraging. A few floating plants dim the light into the shaded, Amazonian feel they love — and vertical wood gives a breeding pair something to lay eggs on.
For the planting, start with easy species: 10 easy aquarium plants that grow without CO2, including Java fern and floating plants like red root floater. Keep flow gentle: how to tell if your aquarium current is too strong.
Angelfish are normally peaceful — but they are opportunistic predators. The rule is blunt: if it fits in their mouth, it is food. Keep small neon tetras and tiny shrimp out.
Good companions: mid-sized tetras (rummy-nose, black skirt, larger cardinals), bottom dwellers like corydoras, and peaceful catfish. Absolute ban: fin-nippers like tiger barbs — they will shred those magnificent fins. Expect a bonded pair to turn aggressive at spawning time; when they start cleaning a leaf or wood surface together and chasing everyone away, eggs are coming.
Pair aggression at spawning is normal cichlid behaviour, not a surprise — for why adults turn on their own young in general, see where did all the baby fish go? Why adults eat fry.
They are omnivores and color up beautifully on variety: quality tropical flakes or pellets as the staple, plus frozen bloodworms or brine shrimp as treats. Feed once or twice daily, only what they finish in 2–3 minutes.
When buying, pick juveniles around 2–3 cm and raise them — you get to watch them grow into their fins. Choose plump-bodied, alert fish with bright eyes, intact fins, and no white spots. If possible, buy from a breeder whose water parameters are close to yours; the transition will be far less stressful.
Before adding angelfish to a new tank, make sure it is cycled: how to cycle a planted aquarium the patient way.
Tip: A well-kept angelfish tank is something you sit in front of after work and lose track of time in front of. Give them height, soft light, vertical wood to weave through — pieces like CozyWoodLab's handcrafted driftwood, which doubles as shelter and spawning surface — and they will reward you for a decade.
