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Fish Freshwater Care: easy Semi-aggressive

Black Acara

Cichlasoma bimaculatum
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Other names: Bimaculatum, Acara
Group: American cichlids · Family: Cichlidae · Origin: South America — Guyana, Suriname, French Guiana and Venezuela

A hardy 15 cm acara recognized by the two dark blotches in the middle of its body and on its caudal peduncle. It adapts to a wide range of water values; it has escaped into the wild in Florida and become invasive.

Will it suit my tank?

Last updated October 16, 2026

Temperature
22–30°C
pH
6–7.5
Hardness
3–15 dGH
Adult size
15 cm
Minimum tank size
200 liters
Lifespan
8–12 years
Social structure
Pair
Male–female ratio
Kendiliğinden eşleşen çift
Swimming zone
Middle
Diet
Omnivore
Breeding
Substrate spawner

Water parameters

Temperature22–30°C
pH6–7.5
General hardness (GH)3–15 dGH
Recommended range
Eats small fish Eats shrimp Suitable for planted tanks

Overview

October 16, 2026 · Suggest an edit

The black acara takes its scientific name ("two-spotted") from the two dark blotches in the middle of the body and above the caudal peduncle. Its olive–brown or grayish body has a dark stripe running from the eye to the blotch in the middle of the body; during breeding its colors darken. It comes from the slow-flowing, planted waters of northeastern South America. Because of its hardiness, individuals released into the wild in Florida have formed permanent populations; it must never be released into the wild.

Tank Setup

October 16, 2026 · Suggest an edit
  • At least 200 liters and 100–120 cm of length for a pair.
  • Roots, flat stones and sand substrate; tough-leaved plants can hold up.
  • It adapts to a wide range of water values; a 25–30% water change weekly.
  • Dim light and hiding places.

Diet

October 16, 2026 · Suggest an edit

Omnivorous. Make cichlid granules the staple; vary them with frozen bloodworms, mysis, brine shrimp and vegetables. One or two small meals a day are enough.

Behavior and Compatibility

October 16, 2026 · Suggest an edit

Relatively calm outside of breeding; once a pair forms, it fiercely guards the area around the eggs. It may eat small fish that fit in its mouth.

Good companions: South American cichlids of similar size (severum, saddle cichlid), large tetras, barbs, plecos.

Avoid: small fish such as neons, shrimp, very aggressive large cichlids.

A short profile for this species

The Black Acara page has the basics, but the sections below have not been written yet. If you keep this species, write a section from your own experience; it will be published under your name after editor approval.

Tank mates

This list is calculated automatically from the species profile and grows as new species are added to the catalog. Try it in the planner for a definite answer.

Usually compatible

Should not be kept together

Hobbyist notes

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Change history and contributors
  1. Page created · October 16, 2026