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🌊 Marine Least Concern 🎣 Game Fish 🌡️ Subtropical 🎣 Game Fish

Swellshark

Cephaloscyllium ventriosum Garman, 1880
Swell Shark (Cephaloscyllium ventriosum)
Swell Shark (Cephaloscyllium ventriosum)
Max Length
110 cm
Max Weight
-
Lifespan
-
Trophic Level
3.9
Depth
5–457 m
Climate
Subtropical
Resilience
Low
Vulnerability
64.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Found on the continental shelves and upper slopes from inshore to deeper waters. Prefers rocky, algal-covered areas of kelp beds. Nocturnal. Feeds on bony fishes, alive and dead, and probably crustaceans. Can inflate its stomach with water or air. Oviparous. Can live in tanks for several years and females can lay eggs in captivity. Occurs in aggregations while resting, sometimes piled one on top of the other. Sometimes caught by sport divers but not used.

Scientific Name
Cephaloscyllium ventriosum
Authority
Garman, 1880
Habitat
Marine
Climate
Subtropical
IUCN Status
LC
Max Length
110 cm
Depth Range
5–457 m
Latitude
37°S – 40°N
Trophic Level
3.9
Resilience
Low
Vulnerability
64.00/100
Salinity
30–40 ppt

🐟 Physical Description

Physical description for Swellshark is currently being compiled.

🌀 Behaviour

Behavioural data for Swellshark is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous

Oviparous, paired eggs are laid. Embryos feed solely on yolk .

🌍 Habitat & Distribution

Marine; demersal; depth range 5 - 457 m , usually 5 - 37 m . Subtropical; 40°N - 37°S, 126°W - 71°W central California, USA to the Gulf of California and southern Mexico; central Chile.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.9±0.61
🌙 Nocturnal
Food Items

bony fishes, alive and dead, and probably crustaceans

📐 Morphometrics

Length–Weight Relationship: W = 0.00269 × L3.21 (TL)
Max TL
110cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2024

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
64.00/100
High vulnerability
Trophic Level
3.9
Predator
Climate Zone
Subtropical
Latitude Range
40°N – 37°S
Described By
Garman, 1880

🎣 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.

📊 Population Dynamics

Year Region Index Notes
- - -

🌐 Names & Taxonomy

Language Common Names
🇬🇧English swell shark · Swellshark
🌍CES máčka kalifornská
🇩🇪German Gefleckter Schwellhai · Kalifornischer Schwellhai · Schwellhai
🇫🇮Finnish täpläpallohai
🇫🇷French Holbiche Ventrue
🇮🇹Italian Gattuccio elegante
🇯🇵Japanese アメリカナヌカザメ
🇳🇱Dutch Zwelhaai
🇵🇹Portuguese Tubarão-balão-do-Pacífico
🇷🇺Russian Калифорнийская кошачьеголовая акула · Калифорнийская раздувающаяся акула · Чилийская кошачьеголовая акула
🇪🇸Spanish Pejegato Hinchado · pejegato globo
🇸🇪Swedish Blåshaj

Scientific Synonyms

Scientific Name Author Year Status
Catulus uter Jordan & Gilbert 1896 Synonym
Cephaloscyllium uter Jordan & Gilbert 1896 Synonym
Scyllium ventriosum Garman 1880 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 6 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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