The Ultimate Guide to Angelfish Types
Angelfish types include two very different groups of aquarium favorites: freshwater angelfish (Pterophyllum) from the Amazon and saltwater angelfish (family Pomacanthidae) from coral reefs.
Two Worlds, One Name
When aquarists talk about “angelfish,” they could be referring to two completely different groups of fish. Your first step is to identify which world you're exploring — the popular freshwater angelfish native to South America, or the brilliantly colored saltwater (marine) angelfish that inhabit the world's coral reefs.
Genus · Pterophyllum
Freshwater Angelfish
Thriving in tall, planted aquariums that mimic a slice of the Amazon, decades of selective breeding have produced a dazzling array of domesticated colors and patterns, from the classic Silver to the vibrant Koi.
Explore All Freshwater TypesFamily · Pomacanthidae
Saltwater Angelfish
Marine angelfish are the living jewels of the coral reef, ranging from small but mighty dwarf angels like the Flame to show-stopping showpieces like the Queen or Emperor.
Explore All Saltwater TypesFreshwater vs. Saltwater — Quick Comparison
| Aspect | Freshwater | Saltwater |
|---|---|---|
| Scientific group | Pterophyllum (family Cichlidae) | Family Pomacanthidae (e.g. Centropyge, Pomacanthus, Holacanthus) |
| Adult size | Body ~6 in; height with fins up to 10–12 in | Dwarfs 3–4 in; large species 10–18 in |
| Lifespan | 8–12+ years with good care | Dwarfs ~5–7 years; large species 10–20+ years |
| Minimum tank size | 29+ gal (tall) single; 55+ gal for a pair or group | 75+ gal for many dwarfs; 120–180+ gal for large angels |
| Water parameters | pH 6.5–7.5; 76–82°F; soft to moderate hardness | SG 1.023–1.026; pH 8.1–8.4; 74–78°F |
Beginner’s Checklist
- Choose your path: freshwater or saltwater.
- Get the right tank size (tall 29+ gal FW; 75–120+ gal SW, species-dependent).
- Cycle the aquarium and test water weekly.
- Match tank mates to temperament and size.
- Feed a varied, species-appropriate diet (frozen/live + high-quality prepared).
- Quarantine new fish and observe for disease for 2–4 weeks.
Frequently Asked Questions
What is the main difference between freshwater and saltwater angelfish?
Freshwater angelfish are from the Amazon River basin and belong to the cichlid family. Saltwater angelfish are from ocean coral reefs and belong to the Pomacanthidae family. They are not related.
How many different angelfish types are there?
There are over 100 angelfish overall. Most are saltwater species (roughly 85+) in the family Pomacanthidae. Freshwater angelfish include three recognized species, plus many captive-bred varieties such as Koi, Marble, Veil, and Silver.
Can freshwater and saltwater angelfish be kept together?
No. They come from different environments with incompatible water requirements (fresh vs. marine) and cannot be housed together.
Are angelfish good for beginner aquarists?
Freshwater angelfish are suitable for beginners who have at least a 29-gallon tall aquarium. Saltwater angelfish are generally intermediate to advanced due to the complexity of maintaining a marine environment.