Platinum Hatchet

Thoracocharax stellatus

Characins

The Platinum Hatchetfish is a distinctive, deep-chested surface dweller known for its extraordinary jumping ability. They are obligate top-level swimmers that require a strictly sealed, tight-fitting lid to prevent escape. Floating plants are highly recommended to help them feel secure and minimize skittishness. They must be kept in schools to thrive.

Platinum Hatchet At a Glance

Adult Size7 cm
Body ShapeCompressed
Growth RateModerate
TemperamentPeaceful
Water TypeFreshwater Only
Flow PreferenceModerate
Waste OutputLow
StockingSchool of 6+

Platinum Hatchet Tank Requirements

Minimum Volume110 L
Minimum Length90 cm
FlowModerate
Water TypeFreshwater Only
Must-Haves in the Tank
Plants - Floating
Stocking calculator

Will Platinum Hatchet fit in your tank?

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

Platinum Hatchet
Test in my tank

Platinum Hatchet Water Parameters

Temperature2328°C
pH5.57.5
Hardness112 dGH

Platinum Hatchet 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
Jumper (Lid Required)Shy / Slow Moving (Easily Stressed)Hyperactive / Fast Swimmer

Platinum Hatchet Varieties

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

Standard

The standard form found in the aquarium trade. Must be kept in a school of 6 or more in an aquarium with plenty of open surface area and a completely secure lid.

Same care requirements as the base species

Also known as: Wild Type

Platinum Hatchet Care Guide Summary

The Platinum Hatchet, scientifically known as Thoracocharax stellatus, belongs to the Characins family group. Adults reach a maximum size of approximately 7 cm and have a compressed body shape with a moderate growth rate. Classified as peaceful, this species primarily occupies the surface zone of the aquarium and produces a low level of biological waste.

To thrive, the Platinum Hatchet 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 23°C and 28°C, with a pH range of 5.57.5 and a general hardness of 112 dGH. A moderate water flow is preferred.

The Platinum Hatchet is a rewarding species to keep, provided its core environmental needs are met. The Platinum Hatchet is typically available in one standard form.

Platinum Hatchet Habitat Setup

When setting up an aquarium for the Platinum Hatchet, a moderate water flow best suits their natural preferences. Because this species occupies the surface zone, the aquarium layout should prioritise adequate surface area with floating cover to make them feel secure near the waterline. Useful additions include floating plants to diffuse overhead light and create shaded areas. Keepers should note that a tight-fitting lid is essential, as this species is a known jumper.

Platinum Hatchet Compatibility Notes

Classified as peaceful, the Platinum Hatchet is a schooling species that feels most secure in a sizeable group, where natural shoaling behaviour reduces stress and brings out their best colours. Selecting tankmates that favour different water layers from the surface zone can help reduce competition and territorial overlap.

Platinum Hatchet Recommended Tank Sizes

Standard aquarium sizes that meet the minimum volume and length requirements for Platinum Hatchet.

Show 10 more tank sizes

Frequently Asked Questions About Platinum Hatchet

How big does Platinum Hatchet get?

Platinum Hatchet (Thoracocharax stellatus) typically reaches a maximum adult size of approximately 7 cm. They have a compressed body shape and a moderate growth rate.

What tank size does Platinum Hatchet need?

A minimum aquarium volume of 110 litres and a tank length of at least 90 cm are recommended for Platinum Hatchet. This ensures enough swimming space and helps maintain stable water conditions.

What water parameters does Platinum Hatchet need?

Platinum Hatchet thrives in freshwater only conditions with a temperature range of 23–28°C, a pH between 5.5 and 7.5, and a general hardness of 1–12 dGH. A moderate water flow is preferred.

Is Platinum Hatchet peaceful or aggressive?

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

How many Platinum Hatchet should be kept together?

Platinum Hatchet 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 Platinum Hatchet have any special tank requirements?

Yes. Platinum Hatchet benefits from plants - floating in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.

Does Platinum Hatchet need a lid on the tank?

Yes. Platinum Hatchet is a known jumper, and a tight-fitting lid or cover is essential to prevent escape. Even a small gap can be enough for a determined fish to leap out.


Fish Similar to Platinum Hatchet

Marbled Hatchetfish

Carnegiella strigata

Characins
4 cm Peaceful

A uniquely shaped, peaceful surface-dwelling characin famous for its deep, keeled belly and incredible jumping ability. In the wild, they can leap from the water and 'fly' short distances using their powerful pectoral fins to catch insects or escape predators. A tight-fitting lid with absolutely no gaps is mandatory. They require floating plants to feel secure and must be kept in schools.

Silver Hatchetfish

Gasteropelecus sternicla

Characins
5 cm Peaceful

A uniquely shaped characin with a deep, keeled belly adapted for surface dwelling. Known as 'flying fish', they possess powerful pectoral fins used to leap from the water to catch insects or escape predators. A tight-fitting lid with absolutely no gaps is mandatory. They are peaceful schooling fish that require open surface swimming space and floating plants to feel secure.

Finger Fish

Monodactylus argenteus

Oddballs
25 cm Semi-Aggressive

The Silver Mono, or Finger Fish, is a stunning, fast-moving schooling fish known for its shiny, diamond-shaped body. They are euryhaline; juveniles inhabit freshwater or brackish estuaries, but adults require high-end brackish or full marine setups to thrive. They are active, voracious eaters that must be kept in groups to curb fin-nipping and internal aggression.

Bala Shark

Balantiocheilos melanopterus

Cyprinids
35 cm Mostly Peaceful

Despite its name, the Bala Shark is a peaceful, schooling cyprinid. They are extremely active, fast swimmers that grow very large and startle easily. They are notorious for injuring themselves by crashing into the aquarium glass if kept in small tanks or easily spooked. They must be kept in groups and eventually require massive, custom-sized aquariums.

Gold Spot Pleco (L001 / L022)

Pterygoplichthys joselimaianus

Catfish
30 cm Mostly Peaceful

A robust, highly attractive sailfin pleco featuring a dark body adorned with striking gold or yellowish spots. Like other Pterygoplichthys species, it grows very large and produces a massive amount of waste. While peaceful toward mid-and-top dwelling fish, it can be territorial with other large bottom dwellers. It requires driftwood in its diet for proper digestion.

Olive Nerite Snail

Neritina reclivata

Invertebrates
2.5 cm Peaceful

The Olive Nerite Snail is highly prized for its exceptional algae-eating abilities and completely peaceful nature. They have a rounded, smooth, olive-green shell. Unlike many freshwater snails, they will not overpopulate an aquarium because their eggs require brackish or saltwater to hatch and develop. They are notorious escape artists and will climb out of the water, so a tight-fitting lid is mandatory.