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Halfbanded rockfish (Sebastes semicinctus) — Sebastidae

Halfbanded rockfish

Sebastes semicinctus
Family: Sebastidae
LC · Least Concern

The Halfbanded rockfish (Sebastes semicinctus) is a saltwater fish of the family Sebastidae that grows up to 25 cm.

Length
25 cm
Water
Saltwater
Depth
58.0–402.0 m
Diet
Carnivore
Behaviour
Large groups
Activity
Nocturnal
Body shape
Torpedo-shaped
Substrate
Sand / mud bottom
Danger
Venomous / poisonous
Range
Eastern Pacific
Edibility
Rarely eaten

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Description

The halfbanded rockfish is a small rockfish from the eastern Pacific, along California and Baja California. The species grows to about 25 cm and has a pink to reddish body with a few incomplete dark cross-bars on the upper half. It lives in large numbers over soft bottoms near rocks on the deeper shelf and hunts small zooplankton and small crustaceans. Like all rockfishes it has venomous fin spines. The IUCN assesses the species as Least Concern (LC).

Frequently asked questions

How do you recognise the Halfbanded rockfish?

The Halfbanded rockfish has a torpedo-shaped body, is mainly red-orange and shows a vertical stripes pattern. Incomplete dark vertical bars; venomous fin spines

Where does the Halfbanded rockfish live?

The Halfbanded rockfish lives in the sea (marine waters) and is mostly found around sand or mud bottom. Eastern Pacific

How big does the Halfbanded rockfish get?

The Halfbanded rockfish grows to a maximum of about 25 cm.

Is the Halfbanded rockfish dangerous to humans?

The Halfbanded rockfish is venomous — handle spines with care and seek medical help after a sting if needed. The fin spines are venomous and give a very painful sting. Immerse the injured area in water as hot as tolerable (about 45 C) for 30-90 minutes to break down the venom, remove spine fragments, clean the wound and seek medical help for a severe reaction.

Is the Halfbanded rockfish edible?

The Halfbanded rockfish is rarely eaten.

More photos

Halfbanded rockfish (Sebastes semicinctus) — Sebastidae — 2
iNaturalist ((c) hsug1747, some rights reserved (CC BY-NC))
Halfbanded rockfish (Sebastes semicinctus) — Sebastidae — 3
iNaturalist ((c) Zach Fratello, some rights reserved (CC BY-NC))
Halfbanded rockfish (Sebastes semicinctus) — Sebastidae — 4
iNaturalist ((c) Lauren Martin, some rights reserved (CC BY-NC))
Halfbanded rockfish (Sebastes semicinctus) — Sebastidae — 5
Wikimedia Commons — Linda Snook (SIMoN / MBNMS) (Public domain)
Fin

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All data

Identification

English name
Halfbanded rockfish verified
Scientific name
Sebastes semicinctus
Family
Sebastidae
Other names
Rockfish verified

Appearance

Size class
Medium verified
Max length (cm)
25.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Red / orange inferred
Pattern
Vertical bars sourced
Tail shape
Straight inferred
Mouth position
Terminal sourced
Lips
Thin sourced
Barbels
No sourced
Dorsal fins
One continuous sourced
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Sand / mud bottom sourced
Min depth (m)
58.0 verified
Max depth (m)
402.0 verified
Natural range
Eastern Pacific verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Small zooplankton and small crustaceans inferred
Social behaviour
Large groups sourced
Territorial
No sourced
Activity
Nocturnal sourced
Reproduction
Separate sexes sourced
Sexual dimorphism
No sourced
levensduur_max_jaar
15.0 verified
Seasonality
Numerous small deep-water redfish; present year-round. sourced
Special features
Incomplete dark vertical bars; venomous fin spines sourced

For anglers

Edibility
Rarely eaten sourced
Fishing method
Bottom fishing with natural bait (worm, shrimp or fish) on or just above the seabed. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Venomous / poisonous verified
First aid
The fin spines are venomous and give a very painful sting. Immerse the injured area in water as hot as tolerable (about 45 C) for 30-90 minutes to break down the venom, remove spine fragments, clean the wound and seek medical help for a severe reaction. sourced

Status & sources

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

Same genus Sebastes

More from the family Sebastidae

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