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Petit PlanetField Guide

Creature record

Spiny Hatchetfish - Petit Planet Creature

Where to find Spiny Hatchetfish in Petit Planet: habitat, season, time, weather, catch method, size range and sell values from the Final Beta.

Final Beta dataVerified October 30, 2026Saltwater FishAquatic CreaturesAll RegionsMain planet
Rare#142Aquatic Creatures

Spiny Hatchetfish

Do you think anyone in the deep sea would use spiny hatchetfish as candlesticks?

Coastal Waters Spring;Summer Nighttime
On this page
Type
Saltwater Fish
Group
Springtide Roamers
Habitat
Coastal Waters
Distribution
All Regions
Season
Spring;Summer
Time
Nighttime
Weather
Any Weather

Size & value

3 – 5 cm

Species size range recorded in the Final Beta.

★★★ large57 Dough
★★ medium48 Dough
★ small44 Dough

Quality and star rating both affect the sale price. MAX-size catches have a glowing aura.

Use the Fishing Rod. The exact approach depends on the creature’s category and, for shore-dwellers, its species type.

  1. Cast the Fishing Rod into the right water: rivers and lakes for freshwater fish, coastal waters for saltwater fish.
  2. Wait for the nibbles, then strike when the line bites down.
  3. Higher-quality saltwater fish need a slow reel-in. Keep the line from snapping instead of holding the button down.

First catch: the creature is added to the Omnidex. Offer it to Mors at the Omni-Gallery to put it on display and unlock its Omnipedia entry.

Habitat: Coastal Waters. Distribution: All Regions.

Season: Spring;Summer. Time: Nighttime. Weather: Any Weather. If two of those tags are restrictive, check the creature tracker before you set out.

Deep Sea Zone · Polyipnus matsubarai

Spiny hatchetfish live in the deep sea and are rarely seen.

An old and obscure manuscript once recorded that, should one encounter rows of vertical lights in the pitch-black depths, it means one's not far from the underwater city.

Multiple studies by later generations have proven that the "vertical lights" are very likely to be spiny hatchetfish. As for the "underwater city," well, that remains a mystery.

Where this data comes from

Compiled from official Petit Planet announcements and the community-maintained Petit Planet Wiki (CC BY-SA 4.0), then checked against the Final Beta build. Data snapshot: October 30, 2026. Values can change before the December 4, 2026 launch.

Fan-made reference. Game names and assets belong to HoYoverse. See sources & credits.

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↑ ↓ to browse · ↵ to openData snapshot · Oct 30, 2026