Species description

Care, breeding and tankmates

Fish profile

Temperament

Semi-aggressive

It displays a peaceful and inquisitive temperament that transitions into strong territoriality during the spawning cycle. It often enjoys exploring the sandy substrate, digging and shifting small piles of sand to clear its territory. The species forms stable pair bonds and will display clear dominant or submissive behaviors within the tank.

Diet

Omnivore

This is a robust and opportunistic omnivore that accepts a wide variety of commercial and fresh foods. Its ideal diet consists of high-quality cichlid pellets alternated with live or frozen foods such as krill, mysis, and bloodworms. It is highly recommended to include a plant-based component, like spirulina or boiled peas, to promote optimal digestion.

Sex ratio

Solitary

This cichlid is best kept in confirmed male-female pairs if breeding and long-term cohabitation are the goals. A 1:1 sex ratio prevents the extreme aggression that occurs when multiple males are present in the same territory. It is standard practice to grow out a small group of juveniles and let a pair form naturally, after which the remaining individuals should be rehomed to prevent them from being bullied to death. Keeping a single specimen is also a very viable option if breeding is not desired.

Feeding frequency

Twice daily

The recommended feeding frequency is once or twice daily, providing carefully controlled portion sizes. Overfeeding can lead to obesity-related health issues and rapidly degrade the aquarium's water quality. It is important to ensure that all fish receive their portion of food without inducing excessive competition.

Bioload

The black acara produces a moderately heavy bioload due to its messy eating habits and relatively robust size. They are opportunistic omnivores that require substantial daily feedings, which subsequently generates a high amount of physical waste and dissolved organics. High-capacity canister filtration and routine gravel vacuuming are essential to prevent the accumulation of detritus and nitrate spikes. An undersized filtration system will quickly be overwhelmed by the bioload of a fully grown adult.

Flow

Stagnant

It prefers calm environments with a weak to moderate water flow, mimicking its natural habitats like slow-moving creeks and swamps. A moderate current ensures the fish remains comfortable and can patrol the substrate without fighting the current. High-powered filters should be outfitted with spray bars or baffles to diffuse the flow rate.

Reproduction

Oviparous

Substrate spawning is common in this species, characterized by highly developed parental care from both the male and female. The pair deposits their eggs on smooth surfaces such as flat stones or driftwood, defending the site fiercely. Once hatched, the fry are closely guarded and frequently relocated to small pits dug in the sand.

Compatibility & tankmates

It is compatible with robust fish of similar size, such as medium-to-large characins, armored catfish, and other peaceful cichlids. Small fish or highly timid species must be avoided as they will likely be intimidated or eaten. During the breeding cycle, the pair will claim a large territory, making temporary isolation beneficial.

Tank level

Middle/Bottom

The black acara predominantly inhabits the bottom and lower-middle regions of the aquarium. They are avid diggers that spend hours sifting through the substrate in search of leftover food and interacting with the tank's bottom structure. They require a soft, sandy bottom to prevent damage to their mouths and gills during this natural foraging behavior. They rarely swim near the surface except when actively taking food dropped from above.