The blue acara is a medium South American cichlid with blue-green facial lines, iridescent scales, and comparatively manageable behavior. It should not be confused with the electric blue acara, a captive color form or hybridized trade line whose appearance and provenance differ.
Quick answer: Give Andinoacara pulcher a long mature aquarium, stable water, open floor space, and defined territories. It can work in a robust community, but breeding pairs defend eggs and fry.
Quick Facts
| Scientific name | Andinoacara pulcher |
| Origin | Trinidad and Venezuela |
| Adult size | Up to about 16 cm total length |
| Temperament | Moderately territorial cichlid |
| Temperature | FishBase reports roughly 18–23°C in nature |
| Experience level | Intermediate |
Identity and Taxonomy
The accepted name is Andinoacara pulcher. Aequidens pulcher and Cichlasoma pulchrum appear in older sources. Verify that a fish sold as ‘electric blue acara’ is not being represented as a wild-form blue acara.
Natural Habitat
FishBase records the species from Trinidad and Venezuela in both turbid standing water and clear flowing streams. This adaptability does not remove the need for stable aquarium conditions.
Appearance and Adult Size
Adults reach up to about 16 cm. The natural form is olive to blue-gray with faint bars and bright blue-green facial lines. Males may grow larger and intensify in color.
Behavior and Social Structure
Blue acaras are territorial but generally less combative than many similarly sized Central American cichlids. Pair formation and parental care increase defense behavior.
Aquarium Setup
Use sand or smooth substrate with wood, rocks, plants protected around the roots, and multiple visual zones. Leave enough open space for a pair to turn and display.
- Use a long mature aquarium
- Provide several visual territories
- Secure decor against digging
- Maintain clear feeding access
- Keep separation equipment available
Water and Maintenance
Maintain stable clean water within a moderate range suited to the fish’s source. Avoid sudden temperature or pH changes and excessive waste accumulation.
Feeding
Offer a varied omnivorous cichlid diet. Use quality prepared foods as the base with suitable frozen or live-style additions.
Tank Mates
Select medium robust fish too large to be swallowed and calm enough not to provoke constant disputes. Avoid tiny fish and highly aggressive cichlids.
Breeding Behavior
Pairs clean a surface and both parents guard eggs, larvae, and fry. The pair may claim a large portion of the aquarium during this period.
Common Mistakes
- Confusing wild blue acara with electric blue trade fish
- Underestimating breeding territory
- Using tiny tank mates
- Keeping unstable water
- Providing no backup for an incompatible pair
Is This Fish Right for You?
A useful intermediate cichlid for aquarists wanting parental behavior and color without committing to a giant predator.
Sources: FishBase
Frequently Asked Questions
How large do blue acaras grow?
FishBase reports up to about 16 cm total length.
Are blue acaras peaceful?
They are moderately territorial, with aggression increasing during breeding.
Is an electric blue acara the same fish?
The trade name usually refers to a captive color line and should not automatically be treated as the natural form.
Do both parents care for fry?
Yes. Both male and female can guard eggs and young.
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