A rare, undescribed species of Acara native to the blackwater Rio Atabapo in South America. They are characterized by small spots on the head and a typical robust, deep Aequidens body. Like other Acaras, they are moderately aggressive (especially when breeding) and thrive in very soft, warm, acidic water with sandy substrates and leaf litter.
Aequidens sp. Atabapo At a Glance
Aequidens sp. Atabapo Tank Requirements
Will Aequidens sp. Atabapo fit in your tank?
Care guides tell you what Aequidens sp. Atabapo needs, the next question is whether your tank can safely provide it. Test Aequidens sp. Atabapo against your tank size, maintenance needs, and the fish you already keep before you buy.
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Aequidens sp. Atabapo Water Parameters
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Aequidens sp. Atabapo Temperament & Compatibility
Aequidens sp. Atabapo Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Male
Males are larger, more colorful, and develop longer fin trailers. They are highly territorial toward other males of the same species. Strictly one male per standard-sized tank is recommended.
Differs in 1 trait from base species
Also known as: Male Atabapo Acara, Bull Acara
Female
Females are noticeably smaller, slightly less aggressive in general community settings, and possess shorter fins. However, they become fiercely protective and aggressive when spawning.
Differs in 3 traits from base species
Also known as: Female Atabapo Acara
Aequidens sp. Atabapo Care Guide Summary
The Aequidens sp. Atabapo, scientifically known as Aequidens sp. Atabapo, belongs to the Cichlids - South American family group. Adults reach a maximum size of approximately 15 cm and have a compressed body shape with a moderate growth rate. Classified as semi-aggressive, this species primarily occupies the mid-level and bottom zones of the aquarium and produces a high level of biological waste.
To thrive, the Aequidens sp. Atabapo requires a freshwater only aquarium with a minimum volume of 110 litres and a tank length of at least 90 cm. Water temperature should be maintained between 25°C and 29°C, with a pH range of 4.5–7 and a general hardness of 1–8 dGH. A low water flow is preferred.
Due to its specialist needs, the Aequidens sp. Atabapo is best suited for fishkeepers who can provide a carefully planned setup. This species is available in 2 varieties: Male and Female. Each may differ slightly in size, temperament, or care needs, so it is worth checking the specific requirements of the variety you plan to keep.
Aequidens sp. Atabapo Habitat Setup
When setting up an aquarium for the Aequidens sp. Atabapo, a low water flow best suits their natural preferences. Because this species occupies the mid-level and bottom zones, the aquarium layout should prioritise open swimming space in the centre of the tank for free movement and sufficient floor space with hiding spots among rocks, wood, or dense planting. Useful additions include a sand substrate to accommodate their sifting behaviour, driftwood, which can serve as both a hiding place and a dietary supplement, and leaf litter or blackwater tannins to replicate their natural soft-water habitat. Keepers should note that expect substrate disturbance, so lightweight décor should be secured and live planted layouts may be difficult to maintain, as this species tends to uproot or consume vegetation.
Aequidens sp. Atabapo Compatibility Notes
Classified as semi-aggressive, the Aequidens sp. Atabapo is adaptable and can be kept singly or in a small group, offering flexibility when planning a community tank. When choosing tankmates, ornamental shrimp are not safe companions, conspecific aggression can be intense, especially in smaller tanks, and territorial behaviour may cause issues if hiding spots or floor space are limited. Selecting tankmates that favour different water layers from the mid-level and bottom zones can help reduce competition and territorial overlap.
Aequidens sp. Atabapo Recommended Tank Sizes
Standard aquarium sizes that meet the minimum volume and length requirements for Aequidens sp. Atabapo.
30 Gallon Breeder
40 Gallon Breeder
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
Show 10 more tank sizes
Aequidens sp. Atabapo Feeding & Diet Considerations
The Aequidens sp. Atabapo will hunt and eat ornamental shrimp, making it unsuitable for shrimp-focused setups and will eat fry, so breeding efforts in the same tank are unlikely to succeed.
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Frequently Asked Questions About Aequidens sp. Atabapo
How big does Aequidens sp. Atabapo get?
Aequidens sp. Atabapo (Aequidens sp. Atabapo) typically reaches a maximum adult size of approximately 15 cm. They have a compressed body shape and a moderate growth rate.
What tank size does Aequidens sp. Atabapo need?
A minimum aquarium volume of 110 litres and a tank length of at least 90 cm are recommended for Aequidens sp. Atabapo. This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Aequidens sp. Atabapo need?
Aequidens sp. Atabapo thrives in freshwater only conditions with a temperature range of 25–29°C, a pH between 4.5 and 7, and a general hardness of 1–8 dGH. A low water flow is preferred.
Is Aequidens sp. Atabapo peaceful or aggressive?
Aequidens sp. Atabapo is classified as semi-aggressive with an aggression score of 6 out of 10. They can work in community setups but may clash with certain tankmates.
Can Aequidens sp. Atabapo live alone?
Yes, Aequidens sp. Atabapo can be kept singly or in a group. They are flexible and adapt well to both setups.
Is Aequidens sp. Atabapo safe with shrimp?
No. Aequidens sp. Atabapo is known to eat ornamental shrimp and is not recommended for shrimp tanks. Even larger shrimp species like Amano Shrimp may be at risk.
Does Aequidens sp. Atabapo have any special tank requirements?
Yes. Aequidens sp. Atabapo benefits from sand (sifters), driftwood (digestion/hiding), and leaf litter/blackwater in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Plants That Suit Aequidens sp. Atabapo
These plants pair well with Aequidens sp. Atabapo based on shared water preferences, layout fit, and how likely they are to hold up in the same aquarium.
Asian Watergrass
Hygroryza aristata
Asian Watermoss
Salvinia cucullata
Floating Fern
Salvinia natans
Giant Salvinia
Salvinia molesta
Meebold's Lagenandra
Lagenandra meeboldii
Sweet Potato
Ipomoea batatas
Fish Similar to Aequidens sp. Atabapo
Aequidens Jenaro Herrera
Aequidens sp. 'Jenaro Herrera'
An undescribed and beautifully colored South American cichlid hailing from the Peruvian Amazon (Rio Itaya/Ucayali drainages). Often confused in the trade with Aequidens diadema, this species features an attractive green-gold metallic sheen and reddish fins as it matures. They are relatively peaceful for mid-sized cichlids but will aggressively defend their territory during spawning and are capable predators of small fish.
Aequidens diadema (Diadem Cichlid)
Aequidens diadema
A medium-sized, semi-aggressive South American cichlid native to the slow-moving rivers and blackwater streams of the Amazon basin. Known for their striking colors and strong personalities, they are omnivorous with a carnivorous tendency. Like many cichlids, they are notorious for digging and rearranging their habitat. They do well in large community tanks with appropriately sized tank mates but are fiercely intolerant of their own kind.
Apistogramma atahualpa
Apistogramma atahualpa
A striking dwarf cichlid native to the blackwater streams of the Peruvian Amazon (Rio Nanay basin). They require soft, acidic water and a sandy substrate, as they naturally sift sand for food. While generally peaceful in community tanks, they become highly territorial during breeding. Leaf litter and driftwood are essential to mimic their natural habitat.
Black Acara
Cichlasoma bimaculatum
A hardy, adaptable, and robust South American cichlid. They are relatively peaceful compared to larger cichlids but become highly territorial when breeding. Known for their oval-shaped body, greyish-green coloration, and a distinct black mid-lateral spot. They naturally sift through the substrate and require sandy bottoms.
Apistogramma uaupesi
Apistogramma uaupesi
A stunning and rare dwarf cichlid native to the blackwater Rio Uaupés basin in South America. They are strictly blackwater fish, requiring very soft, acidic water and dim lighting to thrive. Males are famous for their spectacular, sail-like dorsal fins and lyretails. Like most Apistogramma, they are harem breeders and require complex environments with sightline breaks.
Apistogramma elizabethae
Apistogramma elizabethae
A rare and highly sought-after dwarf cichlid native to the extremely acidic blackwaters of the Rio Uaupés basin in Brazil. Known for its spectacular finnage and sensitivity to water parameters. They require pristine, very soft, and acidic water, alongside a fine sand substrate for sifting.