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Ornamental Aquatics / Species Record
Aquatic Animals · SPECIES PROFILE

Freshwater Angelfish

Pterophyllum scalare

Tall-bodied schooling fish with territorial tendencies; adult height and filtration load are often underestimated.

Freshwater Angelfish (Pterophyllum scalare)
Images · CC BY 4.0Rjcastillo / Wikimedia Commons
Advanced CareRequires More Preparation Update 2026-09-07
Editorial example · Pending Expert Review
Adult Length5.91–7.87 in
Reference Lifespan8–12 yr
Water Temperature Reference75.2–84.2 °F
Air HumidityN/A
IS THIS PET FOR ME? Convert Log to Care Plan
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Ownership Score

Ownership Score

This is an edited estimate of lifestyle compatibility, not an animal value rating. A higher score indicates that, based on current data, the animal is easier to integrate into your daily routine.

50/100 · Requires careful assessment
Beginner suitability54
Handling2
Interactive34
Space50
Cost60
Maintenance54
Travel32
Veterinary Accessibility34
Safety92
RISK SIGNALS
Feeding difficulty 36Environmental control 60Escape risk 8Bite risk 0Toxicity risk 0Noise 92Odor 78Cleaning burden 66
LIFE FIT
Children and families 88Apartments 92Bedrooms 92Frequent travel 27

The composite score is calculated by weighting nine factors: beginner-friendliness, handling ease, interaction, space requirements, cost, maintenance, travel, veterinary access, and safety. Read risk signals according to field direction: lower scores for biting, escape, and toxicity indicate greater safety; higher scores for noise, odor, and cleaning indicate less hassle. Combine this page's environmental requirements and risk notes with your judgment; do not rely solely on the total score.

BEFORE YOU COMMIT

First check whether it fits your life

This brief brings together the space, maintenance, feeding, lifespan and veterinary conditions recorded on this page so you know what to verify next.

50/100 · Requires careful assessment

A better fit if

  • The living conditions need closer planning
  • Adult space is a threshold to solve before purchase
  • Daily maintenance requires a steady time commitment

Resolve these first

  • Adult height:Higher water volume is needed after fins are spread; low tanks will restrict turning and display behaviors.
  • Confirm an exotic veterinarian and emergency route before purchase
Adult size
5.91–7.87 in
Reference Lifespan
8 to 12 years
Minimum space
Minimum stocking for adults is approximately 47.55 US gal, accounting for tank height and filtration load.
Veterinary Accessibility
Difficult

This is a comparison aid based on the current record, not a purchase, medical or local-law conclusion. Check the sources and local conditions before continuing.

THINGS OWNERS UNDERESTIMATE

Common Underestimations by Keepers

  • Adult heightHigher water volume is needed after fins are spread; low tanks will restrict turning and display behaviors.
  • Territorial conflictAfter adult fish pairing, they may drive away companions; tank layout and backup isolation tanks must be planned in advance.
  • Group costJuveniles appear cheap, but water volume, filtration, and feed after growth are the main expenses.
VETERINARY ACCESS

Veterinary Accessibility

Difficult

Fewer specialists for fish and aquatic amphibians; water quality testing is the first line of defense.

Difficult; transport and water temperature control can affect diagnosis.

Specialist Exotic Pet Care Typically Required
DATA STATUS

Where this record stands

Editorial example
Last updated
2026-09-07
Fields checked
No field review record yet
Reference sources
1 · Reference sources
Professional review
Pending veterinary or taxonomic review
Local rules
Local rules need verification

Source links are starting points for reading. A group-level guide does not verify every value for each species. Check local rules separately.

Basic Information

Native Distribution
Amazon Basin, South America
Body Size and Diameter
Common adult carapace length; see species-specific data for exact carapace width.
Dietary Habits
Omnivore
Activity Cycle
Varies by species; first stabilize day/night lighting and water conditions
Availability of Captive-Bred Individuals
Common
Temperament and Aggression
Individual differences are usually observable, and aggression toward tank mates is more likely during breeding or in crowded conditions.
Toxicity and Contact Risks
Non-venomous. Use appropriately sized nets for handling to avoid fin nipping. Contact Risks: Low。
Socialization and Handling
Juveniles can be kept in groups, but adults may establish territories after pairing; prepare for isolation and regrouping.

Environmental Parameters

Water Temperature

Water temperature approximately 75.2–84.2 °F, kept stable and avoid strong water currents directly hitting the animal.

Humidity and Ventilation

Fully aquatic; air humidity not applicable.

Lighting and Circadian Rhythm

Maintain consistent day/night lighting and plant cover to avoid strong light causing individuals to hide for extended periods.

Basking Spot / Localized Heat

Not applicable; focus on stable water temperature, dissolved oxygen, and group space.

UVB Requirements

Maintain consistent day/night lighting and plant cover to avoid strong light causing individuals to hide for extended periods.

Adult Space

Minimum: Minimum stocking for adults is approximately 47.55 US gal, accounting for tank height and filtration load.
Recommended: Recommended minimum group size for adults is 66.04 US gal or larger, with tall plants and retreat areas provided.

Substrate and Water

Substrate free of pollutants and with appropriate particle size; perform regular waste removal. · After the cycle is established, maintain stable temperature, ammonia, and nitrite levels, and adjust flow based on group size and plant layout.

Water Quality · pH 6–7.5

After the cycle is established, maintain stable temperature, ammonia, and nitrite levels, and adjust flow based on group size and plant layout.

These ranges are for planning the environment of a healthy adult, not a constant value for the entire enclosure, and do not cover disease, breeding, or juvenile stages.

Diet and Nutrition

Feed small amounts daily, rotating between flakes, frozen, and appropriate live foods; include feed-fast days and monitor water quality.

Feeding Frequency
Feed small amounts daily, include feed-fast days, and adjust according to water quality.
Live Prey Requirement
Optional
Rodent Pellets
Not Required

Enclosure and activity space

Minimum stocking for adults is approximately 47.55 US gal, accounting for tank height and filtration load.

Dimensions are editor suggestions, not mandatory minimum standards in all regions. Group size, individual body size, and layout may require more space.

Frequently Asked Questions

Are angelfish suitable for small tanks?

Not suitable for long-term small tanks. Adult height, schooling, and territorial behavior require taller and wider water volumes.

Can they be kept with small fish?

Depends on body size and individual temperament. Smaller fish may be chased or eaten; do not base compatibility on the juvenile stage alone.

Risks and Legality

  • Adult height and territorial behavior alter water volume requirements; juvenile tank setups cannot be used directly.
  • Confirm stable water quality, group size, and available quarantine space before acquiring.

Sources and editor notes

This page is a structured editing example and has not yet undergone field-by-field expert review. Reference links are for further consultation; data for some groups may not apply to every species. Please read the full manual before formal husbandry.

OATA Ornamental Aquatic Care guidelines

Extended reading for the group; parameters still require verification field by field.

View data scope and update methods ↗
SIMILAR SPECIES

Other options within the same group

Similar species does not mean they can be co-housed