Trichomycterus nigricans
E824529
Trichomycterus nigricans is a species of pencil catfish in the family Trichomycteridae, serving as the type species that defines the characteristics of its genus.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Trichomycterus nigricans canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9542011 — 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: Trichomycterus nigricans Context triple: [Trichomycteridae, hasTypeSpecies, Trichomycterus nigricans]
-
A.
Chimarrichthys
Chimarrichthys is a genus of Asian river catfishes known for their adaptation to fast-flowing, rocky streams.
-
B.
Pimelodus
Pimelodus is a genus of freshwater catfish native mainly to South American river systems, known for their elongated bodies and prominent barbels.
-
C.
Leptodoras
Leptodoras is a genus of thorny catfishes native to South American freshwater habitats, known for their bony plates and bottom-dwelling behavior.
-
D.
Nemachilichthys
Nemachilichthys is a genus of small freshwater stone loaches native to South Asia, known for inhabiting fast-flowing streams and rivers.
-
E.
Acanthodoras
Acanthodoras is a genus of small, armored freshwater catfish native to South America, known for their bony plates and nocturnal, bottom-dwelling habits.
- 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: Trichomycterus nigricans Target entity description: Trichomycterus nigricans is a species of pencil catfish in the family Trichomycteridae, serving as the type species that defines the characteristics of its genus.
-
A.
Chimarrichthys
Chimarrichthys is a genus of Asian river catfishes known for their adaptation to fast-flowing, rocky streams.
-
B.
Pimelodus
Pimelodus is a genus of freshwater catfish native mainly to South American river systems, known for their elongated bodies and prominent barbels.
-
C.
Leptodoras
Leptodoras is a genus of thorny catfishes native to South American freshwater habitats, known for their bony plates and bottom-dwelling behavior.
-
D.
Nemachilichthys
Nemachilichthys is a genus of small freshwater stone loaches native to South Asia, known for inhabiting fast-flowing streams and rivers.
-
E.
Acanthodoras
Acanthodoras is a genus of small, armored freshwater catfish native to South America, known for their bony plates and nocturnal, bottom-dwelling habits.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
catfish
ⓘ
fish species ⓘ pencil catfish ⓘ |
| belongsToBiologicalDomain | Eukaryota NERFINISHED ⓘ |
| belongsToClade | Teleostei NERFINISHED ⓘ |
| belongsToGroup | freshwater fish ⓘ |
| bloodTemperature | ectothermic ⓘ |
| cellType | eukaryotic ⓘ |
| class | Actinopterygii ⓘ |
| definesCharacteristicOf | genus Trichomycterus ⓘ |
| diet |
invertebrates
ⓘ
small aquatic organisms ⓘ |
| ecologicalRole | benthic fish ⓘ |
| family | Trichomycteridae NERFINISHED ⓘ |
| fertilizationMode | external fertilization ⓘ |
| genus | Trichomycterus NERFINISHED ⓘ |
| habitat |
freshwater
ⓘ
rivers ⓘ streams ⓘ |
| hasBodyShape |
elongated
ⓘ
slender ⓘ |
| hasCirculatorySystem | closed circulatory system ⓘ |
| hasCommonName | pencil catfish ⓘ |
| hasFinType |
caudal fin
ⓘ
dorsal fin ⓘ paired pectoral fins ⓘ |
| hasGillCovers | operculum ⓘ |
| hasNervousSystem | central nervous system ⓘ |
| hasNotochord | yes ⓘ |
| hasRespirationType | gill-breathing ⓘ |
| hasScientificName | Trichomycterus nigricans NERFINISHED ⓘ |
| hasSensoryStructure | barbels ⓘ |
| hasSkeletonType | bony fish ⓘ |
| hasSymmetry | bilateral symmetry ⓘ |
| hasVertebralColumn | yes ⓘ |
| isMulticellular | true ⓘ |
| kingdom | Animalia ⓘ |
| lifestyle | aquatic ⓘ |
| locomotion | swimming ⓘ |
| order | Siluriformes NERFINISHED ⓘ |
| phylum | Chordata ⓘ |
| reproductionMode | sexual reproduction ⓘ |
| reproductionType | oviparous ⓘ |
| skeletonComposition | bone ⓘ |
| taxonRank | species ⓘ |
| typeSpeciesOf | Trichomycterus NERFINISHED ⓘ |
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: Trichomycterus nigricans Description of subject: Trichomycterus nigricans is a species of pencil catfish in the family Trichomycteridae, serving as the type species that defines the characteristics of its genus.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.