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🌊 Marine 🎣 Game Fish 🌡️ Deep-water 🎣 Game Fish

Splitnose rockfish

Sebastes diploproa Gilbert, 1890
Max Length
46 cm
Max Weight
-
Lifespan
86 yrs
Trophic Level
3.5
Depth
0–800 m
Climate
Deep-water
Resilience
Low
Vulnerability
66.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Common offshore, on soft bottoms . Young occur in shallow water, often at surface under drifting kelp . Viviparous, with planktonic larvae and pelagic juveniles . The biggest individuals are sometimes found in markets where the flesh is sold as rockfish fillet . Rarely caught by anglers .)

Scientific Name
Sebastes diploproa
Authority
Gilbert, 1890
Habitat
Marine
Climate
Deep-water
Body Shape
Fusiform / normal
Max Length
46 cm
Lifespan
86 years
Depth Range
0–800 m
Trophic Level
3.5
Resilience
Low
Vulnerability
66.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 13; Dorsal soft rays (total): 11 - 14; Anal spines: 3; Anal soft rays: 5 - 8; Vertebrae: 26. Head spines strong - nasal, preocular, postocular, tympanic and parietal spines present, supraocular, coronal and nuchal spines absent . Toothed knob in front of each upper jaw, deep notch between jaws . Caudal fin moderately indented . A red rockfish, silver ventrally . Branchiostegal rays: 7 .: fusiform / normal.

🌀 Behaviour

Behavioural data for Splitnose rockfish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

Size at Maturity
19cm TL

Gives birth in spring .

🌍 Habitat & Distribution

Marine; bathydemersal; depth range 0 - 800 m , usually 91 - 579 m . Deep-water; 60°N - 27°N, 168°W - 109°W Northeast Pacific: Alaska Peninsula to Cedros Island, Baja California and the Gulf of California in Mexico.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
3.5±0.39

📐 Morphometrics

Length–Weight Relationship: W = 0.01 × L3.09 (TL)
Max TL
46cm
Dorsal Spines
13
Dorsal Rays
13
Anal Spines
3
Anal Rays
7
Vertebrae
26

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
66.00/100
High vulnerability
Trophic Level
3.5
Predator
Body Shape
Fusiform / normal
Climate Zone
Deep-water
Described By
Gilbert, 1890

🎣 Angling Guide

Difficulty
Beginner
Fight Rating
strong pulls with head-shakes
Best Seasons
spring,summer,fall
Best Time
incoming tide, dawn and dusk
Line Weight
15-30
Rod Type
medium-heavy spinning
Hook Size
2/0-5/0
Catch & Release
✓ Recommended
Best Months
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Techniques
bottom fishing popping cork soft plastics live bait
Bait & Lures
live shrimp cut mullet soft plastic paddle-tails popping corks
Recommended Tackle
  • medium-heavy 7ft spinning rod
  • 30-50 lb braid
  • fluorocarbon leader
Where to Find Them
  • grass flats
  • oyster bars
  • marsh drains
  • deeper channel edges
Tips & Tricks
Popping cork technique attracts fish from distance. Fish moving tides.
Catch & Release Tips

Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.

Regulations Summary

⚠️ Slot limits protect breeding-size fish. Verify daily bag limits.

🌐 Names & Taxonomy

Language Common Names
🇬🇧English splitnose rockfish
🇫🇷French gueule-de-loup · queule-de-loup
🇷🇺Russian Большеротый морской окунь
🇪🇸Spanish rocote doble hocico

Scientific Synonyms

Scientific Name Author Year Status
Sebastichthys diploproa Gilbert 1890 Synonym
Sebastodes diploproa Gilbert 1890 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 20 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

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View all observations for Splitnose rockfish ↗
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