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.
Physical description for Swellshark is currently being compiled.
Behavioural data for Swellshark is currently being reviewed.
Oviparous, paired eggs are laid. Embryos feed solely on yolk .
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.
bony fishes, alive and dead, and probably crustaceans
Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.
⚠️ Slot limits protect breeding-size fish. Verify daily bag limits.
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
| 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 Name | Author | Year | Status |
|---|---|---|---|
| Catulus uter | Jordan & Gilbert | 1896 | Synonym |
| Cephaloscyllium uter | Jordan & Gilbert | 1896 | Synonym |
| Scyllium ventriosum | Garman | 1880 | Synonym |
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 6 records indexed .
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