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Spotted rockfish (Sebastiscus tertius) — Sebastidae

Spotted rockfish

Sebastiscus tertius
Family: Sebastidae

The Spotted rockfish (Sebastiscus tertius) is a saltwater fish of the family Sebastidae that grows up to 37 cm.

Length
37 cm
Water
Saltwater
Body shape
Torpedo-shaped
Substrate
Stone or rock
Danger
Venomous / poisonous
Range
Asia: China, Taiwan/Ch Taipei, Hong Kong, Indonesia, Japan, Korea (North) and others

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Description

The spotted rockfish is a scorpionfish (Scorpaenidae) from deeper rocky and reef water of the northwest Pacific. The species grows to about 30 cm and has a stocky, red-brown mottled body with pale spots and a large, spiny head. As a bottom-oriented ambush hunter it shelters among rocks and coral and snaps at small fish and crustaceans. It gives birth to live young. The dorsal and gill-cover spines are venomous and can give a painful puncture wound.

Frequently asked questions

How do you recognise the Spotted rockfish?

The Spotted rockfish has a torpedo-shaped body, is mainly brown and shows a marbled pattern. Bears venomous spines or tissue; handle with great care.

Where does the Spotted rockfish live?

The Spotted rockfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Asia: China, Taiwan/Ch Taipei, Hong Kong, Indonesia, Japan, Korea (North) and others

How big does the Spotted rockfish get?

The Spotted rockfish grows to a maximum of about 37 cm.

Is the Spotted rockfish dangerous to humans?

The Spotted rockfish is venomous — handle spines with care and seek medical help after a sting if needed. For a sting from a fin spine: rinse the wound, remove any visible spine fragments and immerse the part for 30-90 minutes in water as hot as can be tolerated (about 45 C) to break down the venom. The pain can be severe. For marked swelling, a retained spine or signs of infection seek medical care and check tetanus status.

More photos

Spotted rockfish (Sebastiscus tertius) — Sebastidae — 2
iNaturalist ((c) sharkdevotee, some rights reserved (CC BY-NC))
Spotted rockfish (Sebastiscus tertius) — Sebastidae — 3
iNaturalist ((c) Michael Verdirame, some rights reserved (CC BY-NC))
Spotted rockfish (Sebastiscus tertius) — Sebastidae — 4
iNaturalist ((c) 이종윤, some rights reserved (CC BY-NC))
Spotted rockfish (Sebastiscus tertius) — Sebastidae — 5
iNaturalist ((c) 李博恒, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Spotted rockfish sourced
Scientific name
Sebastiscus tertius
Family
Sebastidae

Appearance

Size class
Medium verified
Max length (cm)
37.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Brown sourced
Pattern
Marbled sourced
Tail shape
Rounded inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Natural range
Asia: China, Taiwan/Ch Taipei, Hong Kong, Indonesia, Japan, Korea (North) and others sourced
Origin
Native inferred

Behaviour & biology

Territorial
No inferred
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Bears venomous spines or tissue; handle with great care. inferred

For anglers

Fishing method
Fishing with natural bait (fish, shrimp, worm) or lures close to reef and rock structures. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Venomous / poisonous verified
First aid
For a sting from a fin spine: rinse the wound, remove any visible spine fragments and immerse the part for 30-90 minutes in water as hot as can be tolerated (about 45 C) to break down the venom. The pain can be severe. For marked swelling, a retained spine or signs of infection seek medical care and check tetanus status. sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Sebastiscus

More from the family Sebastidae

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