Gold Tetra

Hemigrammus rodwayi

Characins

A peaceful, active schooling fish perfect for community planted tanks. Fascinatingly, the brilliant metallic gold coloration of wild specimens is a harmless immune response (guanin deposits) to a trematode parasite. Captive-bred specimens lack this parasite and display a silvery-yellow sheen instead. They thrive in mature, dimly lit aquariums with soft water.

Gold Tetra At a Glance

Adult Size4.5 cm
Body ShapeFusiform
Growth RateModerate
TemperamentPeaceful
Water TypeFreshwater Only
Flow PreferenceModerate
Waste OutputLow
StockingSchool of 6+

Gold Tetra Tank Requirements

Minimum Volume55 L
Minimum Length60 cm
FlowModerate
Water TypeFreshwater Only
Must-Haves in the Tank
Plants - Densely coveredLeaf Litter/Blackwater
Stocking calculator

Will Gold Tetra fit in your tank?

Care guides tell you what Gold Tetra needs, the next question is whether your tank can safely provide it. Test Gold Tetra against your tank size, maintenance needs, and the fish you already keep before you buy.

Gold Tetra
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Gold Tetra Water Parameters

Temperature2428°C
pH67.5
Hardness212 dGH

Gold Tetra Temperament & Compatibility

Aggression LevelPeaceful
1/10
Where They Swim
Surface
Mid-level
Bottom
Stocking Guidelines
Keep at Least6 fish
Max per TankNo limit
Can Live Alone?No — needs a group
Behavior Traits
Nano / Bite-sized (Predation Risk)Hyperactive / Fast Swimmer

Gold Tetra Varieties

Each variety inherits the species defaults above. Only differences are highlighted.

Standard / Wild-Caught (Gold)

Wild-caught specimens exhibit the famous metallic gold 'foil' coloration, which is a natural defense response to a harmless parasite found in their native habitat.

Same care requirements as the base species

Also known as: True Gold, Wild Type

Captive Bred (Silver)

Commercially bred in captivity. Because they are never exposed to the wild trematode parasite, they lack the intense gold foil shine and instead feature an attractive silvery-green or yellow hue.

Same care requirements as the base species

Also known as: Silver Tetra, Aquarium Strain

Gold Tetra Care Guide Summary

The Gold Tetra, scientifically known as Hemigrammus rodwayi, belongs to the Characins family group. Adults reach a maximum size of approximately 4.5 cm and have a fusiform body shape with a moderate growth rate. Classified as peaceful, this species primarily occupies the mid-level zone of the aquarium and produces a low level of biological waste.

To thrive, the Gold Tetra requires a freshwater only aquarium with a minimum volume of 55 litres and a tank length of at least 60 cm. Water temperature should be maintained between 24°C and 28°C, with a pH range of 67.5 and a general hardness of 212 dGH. A moderate water flow is preferred.

The Gold Tetra is a rewarding species to keep, provided its core environmental needs are met. This species is available in 2 varieties: Standard / Wild-Caught (Gold) and Captive Bred (Silver). 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.

Gold Tetra Habitat Setup

When setting up an aquarium for the Gold Tetra, a moderate water flow best suits their natural preferences. Because this species occupies the mid-level zone, the aquarium layout should prioritise open swimming space in the centre of the tank for free movement. Useful additions include leaf litter or blackwater tannins to replicate their natural soft-water habitat and dense planting to provide cover, break sightlines, and reduce stress.

Gold Tetra Compatibility Notes

Classified as peaceful, the Gold Tetra is a schooling species that feels most secure in a sizeable group, where natural shoaling behaviour reduces stress and brings out their best colours. When choosing tankmates, their energetic swimming style may stress more sedentary or timid species. Selecting tankmates that favour different water layers from the mid-level zone can help reduce competition and territorial overlap.

Gold Tetra Recommended Tank Sizes

Standard aquarium sizes that meet the minimum volume and length requirements for Gold Tetra.

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Frequently Asked Questions About Gold Tetra

How big does Gold Tetra get?

Gold Tetra (Hemigrammus rodwayi) typically reaches a maximum adult size of approximately 4.5 cm. They have a fusiform body shape and a moderate growth rate.

What tank size does Gold Tetra need?

A minimum aquarium volume of 55 litres and a tank length of at least 60 cm are recommended for Gold Tetra. This ensures enough swimming space and helps maintain stable water conditions.

What water parameters does Gold Tetra need?

Gold Tetra thrives in freshwater only conditions with a temperature range of 24–28°C, a pH between 6 and 7.5, and a general hardness of 2–12 dGH. A moderate water flow is preferred.

Is Gold Tetra peaceful or aggressive?

Gold Tetra is classified as peaceful with an aggression score of 1 out of 10. They are generally well-suited to peaceful community tanks.

How many Gold Tetra should be kept together?

Gold Tetra is a schooling species and should be kept in groups of at least 6. Larger groups help distribute aggression and encourage natural schooling behaviour.

Does Gold Tetra have any special tank requirements?

Yes. Gold Tetra benefits from plants - densely covered and leaf litter/blackwater in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.


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