How to Identify Black Acara

To identify Black Acara (Cichlasoma bimaculatum), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Highly variable, ranging from olive-brown to grayish-blue, often with iridescent scales. A prominent dark spot (ocellus) is typically present on the mid-flank, sometimes extending into a lateral band. Fins may have reddish or yellowish tints, especially during breeding. Juveniles often display more pronounced banding.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Prominent dark spot on the mid-flank, often bordered by lighter scales., Robust, somewhat elongated body typical of 'Cichlasoma' sensu lato., Slightly pointed snout and relatively large eyes., Sexual dimorphism is subtle; males may be larger and have more extended dorsal and anal fins.

Dorsal fin

Long, continuous, with 15-17 spines and 9-11 soft rays. Posterior rays are often elongated in mature males.

Tail fin

Rounded to truncate caudal fin.

Pectoral fin

Well-developed, fan-shaped.

Distinctive fins

Anal fin with 3-4 spines and 7-9 soft rays, often elongated in mature males. Pelvic fins are thoracic.

Identification Tips

1. 1

   Lateral Spot

   Look for the distinct, often ocellated, dark spot on the mid-flank. This is the most reliable distinguishing feature.

2. 2

   Body Shape and Size

   Its robust, somewhat compressed body and adult size (up to 15-20 cm TL) help differentiate it from smaller or more elongated cichlids.

3. 3

   Fin Morphology

   The relatively long dorsal fin and rounded caudal fin are characteristic. Elongated fin rays in males can also be a clue.

4. 4

   Coloration Variability

   While variable, the base coloration and presence of iridescent scales are common. Observe for any faint banding or blotches, especially in juveniles.

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