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Hypselecara temporalis, also known as the Chocolate Cichlid, is a large South American cichlid valued for its dark coloration, sturdy shape, and family-oriented behavior. Native to the Amazon basin, it is mainly associated with quiet, shaded waters along flooded forests and secondary channels. Its brown coloration becomes deeper when the fish is in good condition or breeding. Despite its generally calm appearance, it is a substantial fish that requires a large aquarium, stable water, and carefully selected tank mates. The specimens covered here are wild-collected, and the species is classified as Very common in the specialized aquarium trade.

General species description

Hypselecara temporalis is a large Amazonian cichlid with a deep, laterally compressed body. It belongs to the family Cichlidae, a group known for elaborate parental care and diverse social behavior. In an aquarium, it is usually calm when provided with enough territory, but it may become territorial when a pair forms or spawning begins. An adult requires a very large aquarium, strong filtration, and regular water changes. Its coloration ranges from chocolate brown to olive brown, sometimes with greenish or coppery reflections. Wild fish may be shy at first and benefit from gradual acclimation. A layout using roots, rounded stones, and open swimming areas encourages natural behavior. Providing solid hiding places and open space helps reduce conflict between adults.

Geographical origin and habitat

Reference countries: Brazil, Peru, and Bolivia, within the Amazon basin. Hypselecara temporalis inhabits quiet sections of the Amazon and its tributaries, including wooded margins, side channels, and areas affected by seasonal flooding. These habitats often have soft to slightly acidic water, stained by tannins released from leaves and decomposing wood. Light is filtered by riverside vegetation, making floating plants and subdued lighting useful in the aquarium. Conditions vary with season and locality, but a temperature of 24 to 30 °C and generally acidic to neutral pH suit its maintenance. The species comes from an environment where chemical stability, water quality, and natural organic matter are important. Aquarium conditions should therefore emphasize stable parameters, efficient filtration, and regular maintenance rather than extreme chemistry.

Precise location and local name

Hypselecara temporalis is associated with the Amazon basin rather than one single locality that applies to every fish in the trade. Its range includes tributaries and floodplain habitats in western and central Amazonia. In Portuguese-speaking regions, cichlids of this type may be referred to generally as acará; however, Chocolate Cichlid is the most consistent international aquarium name. Vernacular names can vary by country, local community, and seller. For aquarists, the geographic origin mainly indicates the type of environment to recreate: soft water, wood structure, moderate flow, and subdued light. Wild-collected fish may differ in coloration and behavior according to their population, but their basic needs remain the same: ample space, excellent water quality, and a peaceful setting.

Appearance and physical characteristics

The body of Hypselecara temporalis is oval, deep, and strongly compressed, with a broad head and a well-developed terminal mouth. The base color ranges from chocolate brown to grayish brown, while the fins may display blue-green, orange, or reddish tones depending on mood and condition. A dark band or vertical markings may appear during stress, breeding, or territorial interactions. The dorsal and anal fins are elongated and pointed in adults. Its size and body mass require a sturdy aquarium, a secure cover, and filtration capable of processing a substantial organic load. Adult males tend to become larger and heavier, but sexing remains unreliable in young fish. A maximum length of approximately 30 cm is generally used for mature aquarium specimens and large adults.

General diet

Hypselecara temporalis is an omnivore and opportunistic feeder. In nature, it takes aquatic invertebrates, small fish, crustaceans, larvae, and various plant or organic materials that are available. In the aquarium, a quality pellet formulated for large cichlids can be supplemented with frozen foods such as shrimp, krill, mussels, or bloodworms. Food should be appropriately sized and offered in controlled portions to prevent obesity and water pollution. Foods containing some plant matter can be offered regularly, although the species is not herbivorous. Juveniles benefit from several small meals, while adults can receive one or two feedings daily. A varied but measured diet supports growth, coloration, and condition without overloading the filtration system.

Essential data

• Native river name: Amazon basin and its tributaries
• Local name used: Acará; Chocolate Cichlid in the international aquarium trade
• Origin of the scientific name: Hypselecara is a Greek-derived genus name; temporalis refers to the temporal region of the head
• Full-name etymology: Hypselecara approximately means high head; temporalis means relating to the temple or temporal region
• Common/vernacular names: Chocolate Cichlid, chocolate cichlid, acará
• Family: Cichlidae
• Subfamily: Cichlasomatinae
• Name pronunciation: hip-sel-eh-KAR-ah tem-por-AL-iss
• Discovery: Albert Karl Ludwig Gotthilf Günther, 1862
• Maximum adult size: About 30 cm
• Water temperature and pH: 24 to 30 °C; pH 5.0 to 7.0
• Watercourse appearance and surrounding vegetation: Quiet to moderately flowing, often shaded water bordered by roots, dead wood, and flooded-forest vegetation
• Typical tank mates: Astronotus ocellatus, Geophagus altifrons, Heros efasciatus, Uaru amphiacanthoides, Pterophyllum scalare, Pterophyllum altum
• Temperament and behavior: Generally peaceful for a large cichlid, territorial during breeding, and protective of its offspring
• Water depth: Shallow to moderate sections along banks, side channels, and flooded areas
• Sexual dimorphism: Males are often larger and heavier; young fish are difficult to sex reliably
• Bottom structure and flow: Sandy, muddy, or detrital bottom with wood and leaf litter; slow to moderate flow

For greater success

Success with Hypselecara temporalis depends first on aquarium size, water quality, and compatible tank mates. Use a stable layout, efficient filtration, subdued lighting, and regular water changes. Wild-collected fish should be acclimated patiently and offered varied foods. Watch for territorial behavior, especially when a pair begins to form. Open swimming space combined with roots and shelters helps reduce stress. With warm, soft, clean water, controlled feeding, and a calm environment, this large cichlid can become a striking and long-lived aquarium resident.