Angelfish Care Guide: Tank Size, Water Parameters, Diet, Varieties, Tank Mates & Breeding (Pterophyllum scalare)
Angelfish Care Guide: Everything You Need to Know
Few fish have the silhouette recognition of a freshwater Angelfish (Pterophyllum scalare). Tall, dramatic fins, slow gliding movement, and an enormous range of color morphs have made them one of the single most popular aquarium fish in the world for over a century. They're hardy, long-lived (up to 10 years), and stunning as centerpiece fish in tall planted tanks.
But Angelfish are cichlids — and that means they come with cichlid-style quirks: pair bonding, territoriality, parental care, and a willingness to eat smaller tank mates. This guide walks through everything you need to know to keep healthy, colorful, well-behaved Angelfish: tank setup, aquarium water chemistry, popular varieties, group dynamics, diet, angelfish breeding, and the tank-mate choices that make or break a community tank.
Quick Facts
- Scientific name: Pterophyllum scalare (the most common freshwater angelfish species in the aquarium hobby)
- Common names: Freshwater Angelfish, Silver Angel
- Origin: Amazon, Orinoco, and Essequibo basins of South America
- Adult size: 6 inches long, up to 10 inches tall (including finnage)
- Lifespan: 8–10 years with good angelfish care
- Temperament: Semi-peaceful; territorial during breeding
- Minimum tank size: 29 gallons for a pair; 55+ gallons for a group
- Care level: Easy to moderate
Origin and Natural Habitat
Wild freshwater angelfish live in the slow-moving, heavily vegetated tributaries and flooded forests of the Amazon basin. The water is warm, soft, and slightly acidic, stained by tannins from leaf litter and submerged wood. Their tall, laterally compressed body evolved as camouflage — they slip between vertical reeds and root tangles, where their barred pattern breaks up their outline.
Today, essentially every angelfish in the aquarium hobby is captive-bred. Decades of selective breeding have produced dozens of angelfish varieties and color morphs (more on those below), and the captive strains are far hardier than their wild ancestors. That said, they still appreciate a setup that nods to their natural habitat: tall aquatic plants, driftwood, dim-to-moderate lighting, and stable, slightly soft aquarium water.
Tank Size and Setup for Freshwater Angelfish
Tank height matters more for angelfish than for almost any other community fish. A tall adult angelfish needs vertical room for its fins to stretch out and grow properly.
- Minimum aquarium size: 29 gallons for a single pair (tall version preferred)
- Recommended aquarium size: 55–75+ gallons for a group of 4–6 angelfish or for a planted display
- Tank height: At least 18 inches; 20+ inches is better. Stunted fin growth in shallow tanks is real and permanent
- Substrate: Sand or fine gravel in a natural tone
- Decor: Tall aquatic plants (Vallisneria, Amazon Sword, tall Cryptocoryne), driftwood, vertical branches
- Water flow: Gentle. Strong currents stress angelfish and make them shy
- Lighting: Moderate; floating plants help dim the surface
A tall, planted, dimly lit angelfish aquarium with 4–6 fish gliding through vertical wood and sword plants is one of the most striking displays in the aquarium hobby.
Water Parameters
- Temperature: 76–84°F (24–29°C). 78–82°F is the sweet spot
- pH: 6.5–7.5 (slightly acidic preferred)
- GH: 3–10 dGH
- KH: 2–8 dKH
- Ammonia / Nitrite: 0 ppm (always)
- Nitrate: Under 20 ppm
Stability in water chemistry matters more than chasing exact numbers. Cycle the aquarium fully before adding angelfish, perform 25–30% weekly water changes, and avoid temperature swings. Captive-bred adult angelfish handle a wide pH range but will breed and color up best on the slightly acidic, soft end of the spectrum.
Popular Angelfish Varieties
Decades of selective breeding have produced an enormous range of angelfish color and fin morphs. The most common varieties in the freshwater aquarium hobby include:
- Silver (Wild-Type): The original wild coloration — silver body with three vertical black bars. Hardy and timeless
- Marble: Black, white, and silver marbled pattern. No two are identical
- Koi: Orange-red, white, and black blotches — looks like a koi pond fish
- Platinum: Solid metallic silver-white. Very popular
- Gold: Soft yellow-gold body, often with a darker head
- Black (Black Lace): Smoky-to-jet-black body, sometimes with subtle lace patterning on the fins
- Veiltail: A finnage gene — extra-long, flowing fins. Available in nearly every color variant
- Pearlscale (Diamond): Crinkled, pearl-like scales that catch light beautifully
- Albino: Pinkish-white body with red eyes; lacks the dark pigment of wild-type angelfish
- Zebra / Half Black / Smokey / Blushing: Less common but popular pattern variants
All varieties have identical care requirements. Mix-and-match groups look spectacular, though for angelfish breeding, most hobbyists pair like with like.
Group Dynamics and Pair Formation
Angelfish are best kept either as a single bonded pair or in a group of 5 or more. The worst configuration is 2–4 fish in one tank — without enough fish to dilute aggression, one dominant fish will bully the others mercilessly.
- Single pair: Two bonded adults in a 29+ gallon tank. Calm, will likely spawn, easy to manage
- Group of 5–6+ juvenile angelfish: Buy as juveniles, raise together in a 55+ gallon aquarium, and let them naturally pair off as adults. Once pairs form, you may need to move some fish or upsize the tank
- Two random adults: Often ends with one dead or hiding
If you want guaranteed angelfish behavior with minimal drama, buy a pre-bonded breeding pair from a reputable seller. If you want to watch the angelfish breeding process, buy 5–6 juvenile angelfish and grow them out together.
Diet
Angelfish are omnivores leaning carnivorous. Variety in diet drives color intensity and breeding condition.
- Staple: High-quality cichlid pellet or flake — sized appropriately to their mouth
- Frozen (3–4× per week): Bloodworms, live baby brine shrimp, mysis, daphnia
- Live (when available): Blackworms, brine shrimp, daphnia. Excellent for conditioning breeders
- Vegetable matter: Occasional spirulina flake or blanched vegetable
- Feeding frequency: 2 small meals per day, only what they finish in about a minute. Angelfish feed at the surface and forage along the bottom, so providing food that targets both zones is helpful
Avoid feeding only bloodworms or live tubifex long-term — too much rich protein and not enough variety leads to digestive issues and bloating. Rotate at least 3–4 foods through the week for optimal angelfish care.
Tank Mates (and the Neon Tetra Question)
Angelfish are semi-peaceful, but two facts matter: they're slow eaters that can be outcompeted by aggressive feeders, and they're cichlids that will eat anything that fits in their mouth. For a full breakdown of compatible species and fish to avoid, see our guide to the best tank mates for angelfish.
Good tank mates:
- Corydoras catfish
- Bristlenose Pleco and other peaceful plecos
- Larger peaceful tetras (Congo, Lemon, Diamond, Black Skirt — kept in groups of 6+)
- Rasboras (Harlequin, Lambchop)
- Bolivian Rams (similarly peaceful, similar water preferences)
- Hatchetfish (surface dwellers, stay out of angelfish territory)
- Discus (in larger soft-water tanks)
- Boesemani and other larger rainbowfish
Avoid:
- Neon Tetras and other tiny tetras. This is the most repeated piece of bad advice in the hobby. Older guides pair them, but adult angelfish routinely eat adult neon tetras. The fish look like prey items and behave like them. If you want a tetra schooling tank with angelfish, choose larger species (Congo, Lemon, Black Skirt) in groups of 6+
- Dwarf shrimp. Adult Cherry Shrimp may survive in heavy planting; babies will be eaten
- Fin-nippers (Tiger Barbs, Serpae Tetras in small groups) — they'll shred angelfish fins
- Aggressive cichlids (Convicts, Jack Dempseys, Oscars) — angelfish lose
- Bettas and Gouramis in small tanks — fin-stress conflicts
Breeding
Angelfish are one of the most rewarding cichlids to breed because they form genuine monogamous pairs and raise their own angelfish fry — when they get it right.
Pair bonding: Best results come from raising a group of 5–6 juvenile angelfish together and letting pairs form naturally over 6–12 months. Alternatively, buy a pre-bonded pair from a breeder.
Spawning setup:
- A clean, vertical surface for egg-laying: broad Amazon Sword leaf, piece of slate leaned at 60–80°, breeding cone, or even a section of vertical PVC
- Soft to medium aquarium water (GH 3–8), pH 6.5–7.0, temperature 80–82°F
- Heavy live and frozen food conditioning for 1–2 weeks beforehand
Spawning process:
- The pair will clean the spawning surface obsessively
- Female lays a vertical strip of 100–500 eggs; male follows and fertilizes
- Parents fan the eggs with their pectoral fins and pick off any that develop fungus
- Eggs hatch in 48–60 hours
- "Wrigglers" (hatched larvae attached to yolk sacs) cling to the surface for another 4–7 days
- Once free-swimming, the parents herd them around the tank and even chew food for them
Fry care:
- Feed live baby brine shrimp as soon as fry are free-swimming
- First-time pairs often eat their own eggs or angelfish fry — don't write them off; later spawns usually succeed
- If you want maximum fry survival, pull the spawning surface and artificially raise the fry in a separate tank with an air stone and methylene blue
Expect anywhere from 50 to 300+ fry from a healthy mature female angelfish.
Common Mistakes to Avoid
- Tank too short. Angelfish need vertical room; 18+ inches of tank height is the minimum
- 2–4 fish in one tank. Bullying is almost guaranteed. Keep a single pair or a group of 5+
- Pairing with Neon Tetras. They will be eaten as the angelfish grow
- Skipping the tank cycle. Angelfish are more sensitive to ammonia than typical community fish
- Fin nippers. Tiger Barbs and Serpae Tetras destroy angelfish fins
- Overcrowding. Aggression and disease both spike in crowded angelfish aquariums
- Bloodworms-only diet. Causes bloating; vary the protein sources
Frequently Asked Questions
How to tell if angelfish is happy?
Happy angelfish are active and swim confidently in the mid to upper water levels of the aquarium. They display bright coloration, regular feeding behavior, and may pair bond or guard a territory. Shy, hiding, or lethargic behavior can indicate stress or poor water conditions.
What not to put with angelfish?
Avoid very small fish like Neon Tetras that can be eaten, fin-nipping species such as Tiger Barbs, aggressive cichlids, dwarf shrimp (if breeding), and small fin-nippers that may damage their delicate fins.
Can I put 2 angelfish in a 10 gallon tank?
Ten gallons is too small for two adult angelfish because they require vertical space and enough room to establish territory. At minimum, a 29-gallon tank is recommended for a pair to promote healthy behavior and fin growth.
Shop Angelfish at Tropical Treasures Wyo
We regularly stock healthy, captive-bred freshwater angelfish at Tropical Treasures Wyo in a rotating selection of varieties — Silver, Marble, Koi, Platinum, and more depending on what's available from our breeders. Availability changes week to week, so if you don't see angelfish on our site right now, send us a message and we can let you know what's coming on the next shipment or special-order a specific variety for you.
In the meantime, if you're stocking a South American cichlid tank, our Gold Severum Cichlids and Assorted Parrot Cichlids make great centerpiece alternatives. We also carry the full range of foods you'll want for angels — Xtreme Beef Heart Flakes and PeeWee Pellets are both excellent staples.