Heterodontus quoyi
Silhouette: M Kolmann · PhyloPic
In 3 days ~60% in a week ~90%
The Galapagos bullhead shark, Heterodontus quoyi, is a bullhead shark of the family Heterodontidae found in the tropical eastern Pacific Ocean between latitudes 0° to 10°S, at depths between 3 and 40 m. It can reach a length of 1.07 m.
The reproduction of this bullhead shark is oviparous. Froese, Rainer; Pauly, Daniel (eds.). "Heterodontus quoyi". FishBase. May 2006 version. Photos of Galapagos bullhead shark in the Sealife Collection Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Galápagos Islands | 🇪🇨 Ecuador |
More parks will be added in future updates.
No species of the same family or order lives in Galápagos Islands, so these are its closest relatives here: other sharks & rays.
Possible
About 30% of wildlife watchers report a Peruvian horn shark sighting in Galápagos Islands on a given day, based on 79 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 10th most-seen of the 16 sharks and rays we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
November
In that month about 50% of wildlife watchers report a Peruvian horn shark in Galápagos Islands on a given day, against about 10% in January, the lowest month. That is one of Galápagos Islands's driest months, with almost no rain against 50 mm in March.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Peruvian horn shark sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Galápagos Islands, in our data
Galápagos Islands is the only park on Wallace's Line with enough records to rate Peruvian horn shark sightings: about 30% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Peruvian horn shark is recorded against all the sharks and rays logged in Galápagos Islands (79 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
