Home / Fishes / Cichlids / Cichlidae / Goldeneye cichlid

No federal permit to keep

Goldeneye cichlid

Nannacara anomala

Also known as Golden-eyed dwarf cichlid

Fishes › Cichlids (Cichliformes) › Cichlidae (Cichlids)

The goldeneye cichlid (Nannacara anomala) is a species of cichlid found in fresh water from the Aruka River in Guyana, to the Maroni River in Suriname.

Aquarium hobby

Experience: Easy

Goldeneye cichlid — Photo: Borkowski.robert, CC BY-SA 4.0, via Wikimedia Commons

Photo: Borkowski.robert, CC BY-SA 4.0, via Wikimedia Commons

FamilyCichlids

Adult lengthup to 3 in

WaterFreshwater

HabitatLives in freshwater

Care at a glance

Species-specific aquarium care

Tank: At least 24 in long and 12 in front to back for one adult (adults commonly reach about 2.2 in / 5.6 cm).
Water: Freshwater.
Temperature: 72–77°F (range recorded for this species).
pH: 6–8.
Hardness: 5–19 dGH.
Layout: Uses both the bottom and open water: give open swimming space plus cover near the substrate.
Diet: A predator: feed meaty foods sized to its mouth (frozen fish, shrimp, worms); it will eat tankmates that fit in its mouth. FishBase classes it as a carnivore.

Calculated from this species' own FishBase record: tank size from its typical adult length and swimming zone, water values from its recorded ranges. The group guide below fills in general care.

Care guide

Species care notes

Tank: a base of at least 18 × 15 in (roughly 14 US gallons); space needed is rated “modest tank”.
Water: a fairly wide range, from slightly acidic to slightly alkaline, 72–81 °F, pH 5–7.5.
Behaviour: temperament territorial.
Difficulty: Easy (Seriously Fish rating).

Short excerpts from the species profile:

Setup: “Provide a well planted setup with bits of bogwood, driftwood or mopani wood to provide cover and spawning sites for these fish.”
Diet: “It's naturally a micropredator, foraging for worms, insects and other invertebrates in the wild.”
Tankmates: “Very peaceful dwarf Cichlid.”

From the Seriously Fish profile for this species, which has the full habitat, maintenance, diet, behaviour and breeding write-up 167

Group care guide

South American dwarf cichlids

Applies to most species in this group. Habitat: Soft, acidic, leaf-littered streams. Individual species can differ, so compare with the species numbers above and the linked sources.

Housing & setup

Use species-specific water chemistry and tank base dimensions: M. ramirezi has a source minimum base of 60 × 30 cm; M. altispinosus has 90 × 45 cm. Provide fine sand for these substrate-sifting species.
Very sensitive to nitrate and water swings; mature, stable tanks are best.

Sources 117 119 164 257 258

Climate & lighting

Starting point only: Replace the merged genus range with separately sourced species water temperatures. Check the species-specific values for this animal where shown.

Water

76–84°F

Sources 117 119 164 257 258

Diet

Small live and frozen foods (bloodworms, brine shrimp, daphnia) plus quality micro pellets.

Sources 117 119 164 257 258

Social life

Harems or pairs; peaceful with small dither fish.

Sources 117 119 164 257 258

Health watch

Use mature, stable aquaria. Warm-water M. ramirezi has a source maintenance range of 27–30 °C (81–86 °F), whereas M. altispinosus has 24–28 °C (75–82 °F).

Sources 117 119 164 257 258

Understanding the animal

About this animal

It is often found on flooded savannas near the coast. The male grows to a length of about 5.6 centimetres (2.2 in) while the female is somewhat smaller, and is thus regarded as a dwarf cichlid.

Quoted from the Wikipedia article “Goldeneye cichlid” (CC BY-SA 4.0) 174

In the wild

From this species’ own FishBase record (habitat, bottom type, water and breeding data), not its family. Good care copies these conditions.¹

Where it lives	Lives in freshwater, in rivers and streams. Uses both the bottom and open water. Frequently occurs in flooded savannas of the coastal zone.
Water it lives in	Freshwater, 72–77 °F (22–25 °C), pH 6–8, hardness 5–19 dH.
Climate	Tropical climate.
Wild diet	Hunting macrofauna (predator).
Behavior to plan for	Breeding: clutch tenders.

What this means for care

Keep water within its wild range, 72–77 °F.

FishBase species summary: Nannacara anomala

Native climate (measured)

Warm-season highs	about 90°F (up to 91°F in the hottest sampled areas)
Cool-season lows	about 71°F (down to 70°F in the coldest sampled areas)
Average temperature	78–80°F across sampled records
Relative humidity	79–84% on average (driest month about 76%)
Rainfall	about 2323 mm a year

Measured at 49 wild occurrence records sampled against WorldClim 2.1 climate data (1970–2000 averages). Air conditions in the range are ecological context, not enclosure settings: microhabitats such as burrows, leaf litter or basking rocks can be cooler, warmer or more humid.

From the sources

Quoted from the matching sections of reputable sources for this exact species. Specialist databases are used first; Wikipedia (community-edited, CC BY-SA 4.0) only fills gaps. Other sources are short credited quotes.

Overview	The goldeneye cichlid (Nannacara anomala) is a species of cichlid found in fresh water from the Aruka River in Guyana, to the Maroni River in Suriname. It is often found on flooded savannas near the coast. The male grows to a length of about 5.6 cm while the female is somewhat smaller, and is thus regarded as a dwarf cichlid. The male, under acidic conditions, adopts a greenish tinge along the length of its body, while the female puts on a black coat with a faint line running from her face to the middle of her tail, and in breeding condition, fades into a bright yellow in the stomach. — Wikipedia (community-edited)
Where it lives	Home ranges Population dynamics Growth parameters Max. ages / sizes Length-weight rel. Length-frequencies Mass conversion Recruitment Abundance Life cycle Reproduction Maturity Maturity/Gills rel. — FishBase
Reproduction	During spawning the female changes its color to a chess-board pattern, which is apparently recognized by the young. Only the female takes care of the (up to 300) eggs and young, the male may defend the larger territory. — FishBase
Biology	Frequently occurs in flooded savannas of the coastal zone. Feeds on worms, crustaceans and insects. Quite popular among aquarists who breed it without difficulty. — FishBase

Data and studies

The numbers

Each bar is what one source reports. Where several sources weigh in, the dashed gold band marks their average.

Adult length

Average of sources2.6in

FishBase 1642.2

Seriously Fish species profiles 1673

Maximum recorded length. Measured as standard length (snout to the base of the tail, not counting the tail fin). Fish in home aquariums often stay smaller than wild records.

Water temperature

Average of sources72–79°F

FishBase 16472–77

Seriously Fish species profiles 16772–81

Range the species tolerates in nature; aim for the middle.

pH

Average of sources5.5–7.8

FishBase 1646–8

Seriously Fish species profiles 1675–7.5

Water hardness

Reported5–19dGH

FishBase 1645–19

Minimum tank footprint

Reported18in

Seriously Fish species profiles 16718

Seriously Fish recommends a tank base of at least 18 × 15 in (about 14 US gallons).

Federal legal snapshot

No federal permit to keep

No federal law singles out this species for private keepers. State and local rules still apply.

State law decides most of it. Each state sets its own permits and bans for exotic, native, venomous and dangerous animals, and cities and counties can be stricter. Find your state agency →

Not covered by the Animal Welfare Act

The Act only covers warm-blooded animals. Reptiles, amphibians, fish and invertebrates have no federal care standards, even at licensed facilities; state and local rules may still apply.

Kept in captivity?

Every species on this site needs evidence that people actually keep it. For this one:

Has a Seriously Fish aquarium species profile
FishBase records it in the aquarium trade (Aquarium=commercial; AquariumFishII=based mainly on breeding; aquarium reproduction record)
5 iNaturalist observations of captive animals

Sources for this sheet

FishBase (Froese & Pauly, eds.), version 24.07 Peer-reviewed researchThe global scientific database on fishes, maintained by a consortium of research institutions; every value is referenced.
Seriously Fish species profiles Experienced keeper or breederLong-running aquarium reference written and peer-checked by experienced fishkeepers and ichthyologists; each profile covers habitat, tank size, water, diet, behaviour and breeding.
Merck Veterinary Manual: Management of aquarium fish Zoo, university or veterinaryThe Merck Veterinary Manual: a standard veterinary reference written and reviewed by veterinary specialists.
Merck Veterinary Manual: Types and features of aquatic systems Zoo, university or veterinaryThe Merck Veterinary Manual: a standard veterinary reference written and reviewed by veterinary specialists.
Seriously Fish — Mikrogeophagus ramirezi Zoo, university or veterinaryAdded in the 2026 source-checked care-guide review.
Seriously Fish — Mikrogeophagus altispinosus Zoo, university or veterinaryAdded in the 2026 source-checked care-guide review.
Wikipedia (species article) Community referenceFree encyclopedia; useful overviews with their own citations. Intro text is quoted under CC BY-SA 4.0.
iNaturalist (captive observations) Community referenceCommunity observation platform run by the California Academy of Sciences and National Geographic; observations marked captive show animals living in homes, zoos and aquariums.