Spotted Hatchetfish

Gasteropelecus maculatus

Spotted Hatchetfish is a peaceful top swimmer.

PeacefulTop swimmerBeginner – Intermediate

Save this fish or add it directly to one of your aquariums.

Quick facts

Adult size
≤ 6.5 cm (≤ 2.6 in)
Care level
Beginner – Intermediate
Temperament
Peaceful
Swimming zone
Top swimmer
Temperature
22–28 °C
pH
6–7.5
GH
4–12 dGH
Diet
Omnivore
Lifespan
up to 5 years

Care requirements

Care level: Beginner – Intermediate.

Because it uses the upper part of the aquarium, leave enough surface space instead of crowding that part of the aquarium.

The listed lifespan is up to 5 years.

Water parameters

The temperature range for this fish is 22–28 °C. Compare it carefully with the aquarium target temperature instead of assuming every tropical community setup is suitable.

The pH range for this fish is 6–7.5. That points to slightly acidic to neutral water, but stability is more important than sudden corrections.

The GH range for this fish is 4–12 dGH. That gives some flexibility, but sudden changes are usually more stressful than a stable value that is slightly imperfect.

Temperament and compatibility

As a peaceful top swimmer, Spotted Hatchetfish is best kept with calm species that will not harass it or dominate the feeding area.

Because this fish uses the upper part of the aquarium, compatibility is easier when other fish are not all competing for the same swimming space.

Swimming zone and behavior

This fish uses the upper part of the aquarium, so leave enough surface space for movement and feeding.

Feeding

As an omnivore, Spotted Hatchetfish should receive a varied diet rather than one repeated food type.

Before adding this fish

  • Choose other fish with overlapping temperature needs.
  • Keep pH stable within the listed range instead of making sudden corrections.
  • Avoid aggressive or highly competitive fish.
  • Offer a varied diet that matches this species.

Similar fish profiles

Use these profiles to compare fish with similar care level, size, temperature range, or swimming behavior.

FAQ

How large does Spotted Hatchetfish get?

Spotted Hatchetfish reaches ≤ 6.5 cm (≤ 2.6 in). Provide swimming room.

Is Spotted Hatchetfish peaceful?

Yes. Spotted Hatchetfish is recorded as peaceful and is best planned with calm community fish that do not harass it or dominate the feeding area.

What temperature is suitable for Spotted Hatchetfish?

The temperature range for this fish is 22 to 28 °C. Choose other fish with overlapping temperature needs and avoid sudden temperature swings.

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