Overview
The ocellated eagle ray (or Aetobatus ocellatus) inhabits warm, coastal waters of tropical and subtropical regions throughout the Indo-Pacific, and parts of the eastern Pacific. These rays are typically found in shallow bays, coral reefs, and sandy or muddy seafloors. They have a dark dorsal side covered in bright white spots, a contrasting white underside, a flattened, rhomboid-shaped body, and long, pointed pectoral fins resembling wings. They also have a long, whip-like tail. Adult males measure 1.5m to 2.0m and weigh 20kg to 35kg. Females are larger, measuring up to 2.5m and weigh up to 90kg.
Appearance
Adult
Juvenile
Colourmorphs
Size & weight
Size
Leg span: 2.5 m
Measured as Leg span. The person stands 1.75 m tall for scale.
Habitat requirements
Barrier grade
Grade 2 of 5
Minimum height
1 m minimum
Climbing & water
Climb proof
Not needed
Water barrier
Not allowed
Barriers at this grade
Barrier types with resistance grade 2 or higher.
Habitat needs
Minimum area
Deep water
180 m² + 45 m² per extra animal
Environment
Temperature
24 to 27°C
Plant coverage
0-30%
Water salinity
Saltwater
Enclosure
Aquarium
Terrain
- Sand 50-100%
- Soil 0-50%
- Rock 0-20%
Thriving Relationships
Large Indo-Pacific Reef animals: sharing a habitat with one of these species fulfils a Thriving requirement.
Diet and enrichment
Diet
- Clams and Crustaceans
- Squid
Enrichment items
Conservation
IUCN Red List
Endangered
Least concern
Critically endangered
The ocellated eagle ray is considered Endangered. As a slow-growing species with low reproductive rates, it is especially vulnerable to overexploitation. It is frequently caught as bycatch in nets and lines intended for other species. In some regions, it is also hunted for its meat, cartilage, and gill rakers. Habitat degradation, particularly the destruction of coral reefs, seagrass beds, and coastal nursery areas, further threatens its populations. Pollution, boat traffic, and climate change–related stressors, make it difficult for populations to recover. Trade in the ocellated eagle ray is regulated to prevent overexploitation. Several countries have fishing regulations, protected areas, and bycatch reduction strategies to safeguard the species. Research programs are using satellite and acoustic tagging to better understand their movements, habitat use, and behaviour. Education campaigns and eco-tourism initiatives help raise awareness and reduce human impacts. While direct reintroduction efforts are limited, preserving healthy habitats and reducing human pressures support the long-term survival of ocellated eagle ray populations.
Zoopedia sketchbook
Social & reproduction
Keeper notes
Ocellated eagle rays may be solitary or loosely social. They are often seen in groups for the purposes of feeding, breeding and travelling. Breeding is seasonal in some regions, often tied to warmer water temperatures and food availability: late spring to early summer is typical. They are thought to reproduce every two years, though reproductive cycles may vary by region and environmental conditions. For courtship, males will follow and nip at females before aligning themselves by interlocking their claspers and transferring sperm via cloacas. Gestation typically lasts around 1 year, and females give birth to 1 to 4 pups per litter. Newborns are miniature versions of adults, measuring approximately 30–45cm and are immediately independent. Ocellated eagle rays reach sexual maturity at around 3 to 6 years of age, with males generally maturing earlier than females.
Group and breeding
Group
Group name
Fever
Group size
1-16 (up to 16 males, up to 16 females)
Male bachelor group
1-16
Female bachelor group
1-16
Offspring dispersal
None
Lifecycle and breeding
Life expectancy
20-30 years
Age of sexual maturity
5 years
Age of sexual sterility
Death
Gestation or incubation
12 months
Interbirth period
12 months
Litter size
1-3
Mating system
Promiscuous
Mating season
Summer
Reproduction in captivity
Easy
Research
Research levels
| Level | Unlocks | Research gate |
|---|---|---|
| Level 1 | Thriving Requirement 1: Bubble Blower - Airstone, at least 2; Ocellated Eagle Ray Fact Sheet | |
| Level 2 | Thriving Requirement 2: Fine Sand terrain; Fertility Level 1 (+15% fertility) | |
| Level 3 | Thriving Requirement 3: Food Grade 2; Release groups and release to the wild | |
| Level 4 | Thriving Requirement 4: Forage Tray, at least 2 | |
| Level 5 | Thriving Requirement 5: Large Indo-Pacific Reef animals Social Group; Fertility Level 2 (+30% fertility) | |
Researched by
Vets
Researched at
Habitat or exhibit and Research Centre
Every level of this species' research, with its unlock conditions.
Release groups
Valid release groups
| Group | Type | Animals |
|---|---|---|
| Mixed Group | Mixed group | 3 males, 3 females |
| Solitary Male | Solitary male | 1 male |
| Solitary Female | Solitary female | 1 female |
Release groups, reserve requirements and the roles this species fills.
Animal facts
- Ocellated eagle rays are known for ‘breaching’ - jumping out of the surface of the water, sometimes up to 1m high.
- Ocellated eagle rays have specially adapted teeth that form a flat, rasp-like surface for crushing shells.
- Ocellated eagle rays have venomous spikes in their long, whip-like tail.
- Each ocellated eagle rays have a unique pattern of spots that can be used to identify them like a fingerprint.
- Ocellated eagle rays are named after eagles because of their large wing-like fins.
Taxonomy
Class
Order
Family
Genus
Species