European eel
E240852
The European eel is a migratory fish species native to European and North African waters, known for its complex life cycle that includes spawning in the Sargasso Sea and long-distance journeys between marine and freshwater habitats.
All labels observed (2)
| Label | Occurrences |
|---|---|
| European eel canonical | 3 |
| Anguilla the eel | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2156838 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: European eel Context triple: [Llyn Tegid, habitatOf, European eel]
-
A.
Pacific lamprey
The Pacific lamprey is an ancient, eel-like jawless fish native to the Pacific coast of North America, where it plays a key ecological and cultural role, particularly for Indigenous communities.
-
B.
Alewife
Alewife is a major subway station and transit hub in North Cambridge, Massachusetts, serving as the northern endpoint of Boston’s MBTA Red Line and a large park-and-ride facility.
-
C.
Amur sturgeon
The Amur sturgeon is a large, long-lived freshwater fish native to the Amur River basin in East Asia, valued for its caviar and threatened by overfishing and habitat degradation.
-
D.
Gadus aeglefinus
Gadus aeglefinus is the haddock, a North Atlantic marine fish widely used in traditional smoked and fried dishes.
-
E.
Sturgeon
Sturgeon is a surname most prominently associated with Nicola Sturgeon, the former First Minister of Scotland and leader of the Scottish National Party.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: European eel Target entity description: The European eel is a migratory fish species native to European and North African waters, known for its complex life cycle that includes spawning in the Sargasso Sea and long-distance journeys between marine and freshwater habitats.
-
A.
Pacific lamprey
The Pacific lamprey is an ancient, eel-like jawless fish native to the Pacific coast of North America, where it plays a key ecological and cultural role, particularly for Indigenous communities.
-
B.
Alewife
Alewife is a major subway station and transit hub in North Cambridge, Massachusetts, serving as the northern endpoint of Boston’s MBTA Red Line and a large park-and-ride facility.
-
C.
Amur sturgeon
The Amur sturgeon is a large, long-lived freshwater fish native to the Amur River basin in East Asia, valued for its caviar and threatened by overfishing and habitat degradation.
-
D.
Gadus aeglefinus
Gadus aeglefinus is the haddock, a North Atlantic marine fish widely used in traditional smoked and fried dishes.
-
E.
Sturgeon
Sturgeon is a surname most prominently associated with Nicola Sturgeon, the former First Minister of Scotland and leader of the Scottish National Party.
- F. None of above. chosen
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
catadromous fish
ⓘ
migratory fish ⓘ species of ray-finned fish ⓘ |
| ageAtMaturity | about 5–20 years ⓘ |
| binomialName | Anguilla anguilla ⓘ |
| bodyShape |
elongated
ⓘ
snake-like ⓘ |
| CITESListing | Appendix II ⓘ |
| class | Actinopterygii ⓘ |
| coloration |
olive-brown to dark green on the back
ⓘ
yellowish to whitish on the belly ⓘ |
| commercialUse | food fish ⓘ |
| describedBy | Carl Linnaeus ⓘ |
| diet |
invertebrates
ⓘ
small fish ⓘ |
| dorsalFin | long and continuous with caudal and anal fins ⓘ |
| family | Anguillidae ⓘ |
| genus | Anguilla ⓘ |
| habitat |
coastal waters
ⓘ
estuaries ⓘ lakes ⓘ rivers ⓘ |
| IUCNRedListCategory | CR ⓘ |
| IUCNStatus | Critically Endangered ⓘ |
| IUCNStatusSystem |
IUCN Red List Categories and Criteria
ⓘ
surface form:
IUCN3.1
|
| juvenileStage | glass eel ⓘ |
| kingdom | Animalia ⓘ |
| larvalStage | leptocephalus ⓘ |
| lifeCycleType | catadromous ⓘ |
| matureStage | silver eel ⓘ |
| maximumAge | over 50 years in captivity ⓘ |
| maximumTotalLength | about 1.5 metres ⓘ |
| migratesBetween | marine waters and freshwater habitats ⓘ |
| nativeTo |
Europe
ⓘ
Mediterranean Sea ⓘ
surface form:
Mediterranean Sea basin
North Africa ⓘ Atlantic Ocean ⓘ
surface form:
North Atlantic Ocean
|
| order | Anguilliformes ⓘ |
| phylum | Chordata ⓘ |
| regulatedBy | EU eel management plans ⓘ |
| reproduction | semelparous ⓘ |
| spawningBehavior | spawns once then dies ⓘ |
| spawnsIn | Sargasso Sea ⓘ |
| subadultStage | yellow eel ⓘ |
| taxonRank | species ⓘ |
| threat |
barriers to migration
ⓘ
climate change ⓘ habitat loss ⓘ overfishing ⓘ parasites ⓘ pollution ⓘ |
| yearDescribed | 1758 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: European eel Description of subject: The European eel is a migratory fish species native to European and North African waters, known for its complex life cycle that includes spawning in the Sargasso Sea and long-distance journeys between marine and freshwater habitats.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Anguilla the eel