Angelfish Types: Freshwater Species, Color Morphs, and More

Two completely unrelated fish groups share the angelfish name, a fact that trips up countless beginners browsing the local fish store. The freshwater side includes only three species in the genus Pterophyllum: Pterophyllum scalare, Pterophyllum altum, and Pterophyllum leopoldi. Nearly every angelfish in a pet shop is a selectively bred color or fin form of P. scalare. Saltwater angelfish belong to a completely different family, Pomacanthidae, and need a reef setup rather than a heated freshwater tank.

Your guide below walks through the three wild species, the freshwater color varieties that dominate the trade, fin shapes, care demands, and how to match a variety to your tank height and water chemistry.

The Three Wild Species Behind Every Aquarium Angelfish

Every fancy color morph swimming in a home tank descends from one of three wild ancestors. The genus Pterophyllum contains Pterophyllum scalare, Pterophyllum altum, and Pterophyllum leopoldi, and that is the entire wild roster. Telling them apart takes practice, yet a few body proportions and stripe counts separate the three in seconds.

Body Shape and Stripe Count

Scalare and altum both show a tall, disc-like body, yet altum grows noticeably taller in proportion to its length. A mature altum stretches to about 12 inches from dorsal tip to anal tip, while scalare usually tops out near 8 to 10 inches under good care. Leopoldi sits lower in the body with a more elongated profile, the smallest of the three. Stripe count is the easiest field mark: scalare typically shows three bold vertical bars, altum carries three as well but with a steeper forehead and a notched upper lip, and leopoldi shows two main bars with a fainter third.

Native Rivers and Hobby Availability

All three species originate in slow, tannin-stained tributaries of the Amazon River basin and the Orinoco. Scalare ranges the widest, from Peru through Brazil and into Guyana, which is why wild and captive-bred offspring flood the trade. Altum hails from the Orinoco and upper Rio Negro watershed in Colombia and Venezuela, where the water runs soft and acidic, and that chemistry is exactly why this species struggles in a typical hard-water setup. Leopoldi, sometimes called the teardrop angelfish, haunts the quieter stretches of the Amazon and its slow tributaries, and it rarely shows up in general pet stores.

Species	Typical Adult Height	Stripe Pattern	Hobby Availability
Pterophyllum scalare	8–10 in	3 bold vertical bars	Very common, parent of most color morphs
Pterophyllum altum	Up to 12 in	3 bars, steep forehead	Rare, specialist breeders only
Pterophyllum leopoldi	About 6 in	2 main bars, faint third	Uncommon, occasional imports

“Quick check at the store: count the dark vertical bars on a juvenile and look at the forehead slope. That single glance rules out altum or leopoldi in about ten seconds.

Freshwater Color Varieties That Dominate the Hobby

Walk into any chain store and the fish labeled “angelfish” are almost always Pterophyllum scalare, even when their colors look nothing like the wild type. Decades of selective breeding have layered new patterns onto the same species, producing Marble Angelfish, Koi Angelfish, Gold Angelfish, Zebra Angelfish, and Black Lace varieties most hobbyists actually bring home. Knowing how those morphs were built helps you tell similar-looking fish apart and predict what their fry will look like.

Foundational Morphs Worth Recognizing

Marble angelfish carry a mottled black-and-silver pattern that develops as the fish matures, with markings that often shift and spread with age. Koi angelfish earned their name from the orange-and-white coloration that mimics pond koi, and breeders select for clean breaks between the colored and pearlescent zones. Gold angelfish display a warm yellow body, sometimes with a partial hood, and are essentially a stripped-down color line that removes most of the dark pigment. Zebra angelfish show extra vertical stripes, four or more rather than the wild three, and a subtle blue iridescence. Black lace angelfish combine a deep black body with lacy, light-edged scales, and a good specimen looks almost like a dark veil with silver stitching.

How Selective Breeding Layered New Patterns

Almost every popular color variety traces back to mutations discovered in commercial breeding stock, then refined over generations. Marble appeared as a spontaneous piebald pattern in the 1960s, and breeders fixed it by selecting fish that passed the trait to their offspring. Koi and gold lines came from crosses that emphasized the underlying gold pigment while suppressing dark stripes. Black lace emerged when breeders selected for both dark coloration and the “lace” effect, where each scale carries a lighter rim. The practical takeaway: any two fish from the same morph can carry different hidden genes, so fry from a “koi” pair can throw marbles, golds, or wild-type patterns depending on what recessives both parents carry.

Visual Cues to Tell Similar Morphs Apart

Sorting a tank of juveniles takes a sharp eye and good lighting. Hold the fish at a slight angle to a bright LED, then look for the orange wash on koi and the absence of strong dark bars on gold. Black lace shows scale definition even in dim light, while a true black lacks the lighter edges. Zebra is the easiest call, four or more bars and a slight blue tint, while half-black zebras show the pattern only on the rear half of the body. Buying from a breeder who labels each fish by line and parentage removes most of the guesswork.

Fin Shapes and Body Forms That Define Each Variety

Color tells only half the story, because fin shape changes how the same fish looks in a community tank. Veil Angelfish, super-veil, and standard fin types are inherited independently of color, so a marble veil angelfish is just a marble with elongated fins, not a separate species. Mixing fin genetics is where most breeding projects get interesting, and where buyers can end up with a fish whose fins outgrow its tank.

Veil, Super-Veil, and Standard Fin Genetics

The veil trait is a simple dominant, so a single parent carrying the gene passes it to roughly half its fry. Standard fin is recessive. Super-veil takes the trait further, with trailing fins that can extend several inches past the body on a mature adult, and it requires a fish to inherit the veil gene from both parents. Visually, veil fins taper to clean points, super-veil fins stretch well past the tail, and standard fins stay close to the body and never trail. Because veil is dominant, two standard-finned parents cannot produce veiled offspring, a useful rule when you are buying juveniles and want to know what you are getting.

Platinum, Albino, and Ghost Variants

Platinum angelfish lack most dark pigment and glow almost white under aquarium light, with a faint pearlescent sheen that some breeders market as “blue platinum” once the iridescence comes in. Albino angelfish show pink or red eyes and a pale gold or white body, and the albino gene is recessive to all other color variants. Ghost angelfish are not albinos; they simply lack the dark pigment that produces strong bars and markings, so a ghost marble still shows mottled silver but no black. These three traits stack on top of any color morph, which is how a single fish can be a “blue platinum ghost veil” without belonging to a separate species.

Why the Same Color Looks Different Across Fin Types

Elongated fins spread out any pattern they carry, so the bold bars on a zebra standard look crisp and compact, while the same bars on a super-veil look stretched and soft. Dark colors like black lace intensify against long fins, because more surface area gives the eye more dark pigment to read. Pale colors like platinum and gold brighten up under the same logic, since light reflects off the larger fin area. The practical result: a marble standard and a marble super-veil can look like two different fish to a casual viewer, even when their color genetics are identical.

Fin Type	Genetic Requirement	Visual Effect	Care Note
Standard	Recessive	Compact fins, crisp pattern	Easiest to keep, swims well in planted tanks
Veil	Dominant	Elongated fins, soft pattern	Avoid sharp décor that tears fins
Super-veil	Homozygous dominant	Trailing fins past the tail	Needs taller tanks and quiet tankmates

Size, Temperament, and Care Demands Across the Spectrum

Size, behavior, and water needs shift noticeably between the three wild species and across the color varieties built on top of scalare. A standard scalare tops out near 6 inches of body length with another 4 to 6 inches of fin, while an altum can stretch past a foot from dorsal to anal. Temperament tracks species more than color, but tank height matters for every form because of that tall body shape.

Typical Adult Dimensions by Type

A standard Pterophyllum scalare reaches about 6 inches of body length, and veil or super-veil individuals can add another 4 to 6 inches of trailing fin. Pterophyllum leopoldi is the most compact of the three, rarely exceeding 5 inches of body. Pterophyllum altum is the giant, and a healthy adult can measure close to 12 inches from the top of the dorsal to the tip of the anal, taller than most home aquariums. Plan tank dimensions around the height of the adult fish, not the length, because these fish swim vertically as much as horizontally.

Pair-Bonding and Community Tank Choices

Angelfish are pair-bonding cichlids, which means a bonded male and female will defend a territory, clean a flat surface together, and protect a clutch of eggs. In a community tank, that translates into a problem once a pair forms, because anything small enough to fit in their mouth becomes a target, including neon tetras and juvenile guppies. Mid-sized tetras, corydoras, and larger gouramis usually coexist well, while small rasboras and shrimp end up on the menu. Sexing adults is tricky because the species shows only mild sexual dimorphism, and the only sure test is watching breeding tubes form when a female fills with eggs.

Tank Height and Stocking Differences

Height is the dimension that limits your stocking list, and most failures come from tanks that are long but short. A 55-gallon tank that is 48 inches long but only 13 inches tall is a poor fit for adult altums and even tight for veil angelfish. Aim for at least 18 inches of vertical swimming space for standard scalare and 24 inches or more for altums. Stocking density drops as fin length goes up, because veil and super-veil fish move more slowly and need room to turn without catching their fins on décor.

That same drag on mobility shapes how these fish behave in a community tank, since temperament often tracks with how confidently a fish can swim.

Type	Adult Body Length	Total Height with Fins	Minimum Tank Height
Standard scalare	6 in	8–10 in	18 in
Veil scalare	6 in	10–12 in	20 in
Super-veil scalare	6 in	12+ in	22 in
Altum	7–8 in	10–12 in	24 in

Matching an Angelfish Variety to Your Aquarium Setup

Picking a variety comes down to your water, your tank height, and how much parameter drift you can live with. Some color morphs of Pterophyllum scalare tolerate a wide pH range and still color up well, while others reward stable, slightly acidic water with brighter markings. Altums sit at the other end of the difficulty curve and punish anyone who cannot keep soft, acidic conditions steady.

Beginner-Friendly Morphs

Marble, gold, and black lace scalare handle the broadest range of conditions and forgive the small pH swings that come from city tap water. They breed readily in community tanks once they mature, and they accept a wide diet of pellets, frozen bloodworms, and the occasional treat of brine shrimp. Sexual dimorphism stays mild in these lines, so expect to grow out six to eight juveniles if your goal is a bonded pair. Avoid pairing veil fins with active barbs or other fin nippers, because a long fin is a target the moment a curious fish takes a bite.

Intermediate Choices That Reward Stability

Koi and platinum morphs push the difficulty up a notch, because their pale colors dull quickly when pH and hardness swing between water changes. Run a stable temperature near 78 to 80 degrees Fahrenheit, keep nitrates under 20 ppm, and feed a color-enhancing pellet with steady astaxanthin, and a koi angelfish will throw clean orange-and-white breaks that look painted on. Driftwood and Indian almond leaves help by softening the water and releasing gentle tannins, which most color lines prefer even if they do not strictly require it.

Advanced Species and System Demands

Altum Angelfish belong in a dedicated biotope tank with a deep sand bed, tangled driftwood, and very low general hardness, target a pH of 4.5 to 5.5 and TDS under 100 ppm. Wild altums are not for casual keepers, and even captive-bred altum lines imported from specialist breeders struggle in mineral-rich municipal water. Leopoldi sits between the two in difficulty, smaller and more forgiving than altum, but still rare in the hobby and usually sourced through importers rather than chain stores.

Breeding Potential and Long-Term Considerations by Type

Breeding scalare morphs is one of the more accessible cichlid projects, but the genetics behind popular colors carry trade-offs that affect fry health, growth rates, and how easily you can place the offspring. Knowing what each line carries helps you avoid pairing fish whose offspring carry hidden defects or weak color expression.

Pairing Behavior and Line Selection

Letting a group of six to eight juveniles grow out together is the easiest path to a bonded pair, because the fish usually choose their own mates as they mature. Once a pair locks in, they will defend a corner of the tank, fan a flat surface, and eventually lay a clutch of eggs on it. Pull the eggs or remove other fish if you want a high survival rate, because the parents will defend the fry but lose the battle against hungry tetras. Line selection matters when you plan to breed for a specific color, because two gold angelfish can produce mostly golds with a few wild-type fry, while a gold-to-marble cross usually throws a mix of both patterns plus surprises.

Genetic Trade-Offs Behind Popular Colors

The marble gene is associated with higher rates of double-tail and spinal deformities when fish inherit two copies, and breeders avoid line-crossing marbles with each other for that reason. The gold trait suppresses dark pigment cleanly but can produce washed-out fish if the line is inbred over many generations. Albino lines tend to be more light-sensitive and show weaker immune responses under stress, and the trait is recessive, so you need two albino parents to produce albino fry. Plan your breeding stock with a goal of genetic diversity, rotating in unrelated fish every few generations to keep the line healthy.

“Heads up: keep detailed records of every pairing, including parentage, fin type, and color outcome. Three generations of notes turn a hobby tank into a serious breeding project and prevent the inbreeding spirals that flatten a line over time.

Practical Limits on Keeping and Selling

A single pair of scalare can produce 200 to 400 fry per clutch, and two or three clutches a month will quickly outgrow any home tank. Local fish stores may take juveniles, but only if the line is identifiable and healthy, and shipping fish across state lines requires careful attention to water temperature and oxygen levels. Many regions have rules about transporting live fish, and some states require health certificates for any shipment, so check local regulations before selling across borders. Documenting parentage, water parameters, and grow-out rates also helps you place fish with buyers who want specific traits rather than a generic “angelfish.”

Those same records become useful years later, when a proven pair turns out to be worth more than the sum of its fry.

Bottom Line

The wild Pterophyllum genus holds just three species, and almost every fish you see in a freshwater tank is a selectively bred form of Pterophyllum scalare. Saltwater angelfish, despite the shared common name, belong to a separate family and a different care category entirely. Pick your variety by matching the fish’s adult height and water needs to your tank, not just by color, and your fish will reward you with years of clean patterning and calm pair behavior.

FAQ