Glaphyropoma
genus of fishes

Glaphyropoma is a genus of freshwater ray-finned fish belonging to the family Trichomycteridae and the subfamily Copionodontinae, the Chapada pencil catfishes. The fishes in this genus are endemic to Bahia in Brazil.
Species
There are currently two recognized species in this genus:
Glaphyropoma rodriguesi de Pinna, 1992
Glaphyropoma spinosum Bichuette, de Pinna & Trajano, 2008
The single synapomorphy proposed for Glaphyropoma is the marked narrowing of the first hypobranchial, giving the hypobranchial a slender shape.
G. rodriguesi grows to about 5.1 centimetres (2.0 in) in standard length and originates from the Mucujê River, a tributary of the Paraguaçu River in Brazil.
G. spinosum is known to grow as large as 5.8 cm (2.3 in) in standard length. It is known from subterranean waters in the Diamantina Plateau of the Bahia State in central northeastern Brazil. This is the first-known troglomorphic species in the subfamily Copionodontinae. These fish live in quartzitic caves formed by erosion by rain. The water depth in the creek where the catfish live varies mostly between 10 and 50 cm (4 and 20 in), with moderate current and some spotty accumulation of plant debris where fish are found foraging.
The public source identifies “Glaphyropoma” as genus of fishes. This brief keeps that definition visible, then builds a research path around Glaphyropoma, genus and fishes.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Glaphyropoma”, the useful work is to connect “genus of fishes” to the records capable of establishing context and consequence.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Jul 28, 2026. The linked authority identifier is Q1099113. The first chronological checks are 1992 and 2008.
Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
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Questions for further research
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This entry incorporates text from “Glaphyropoma” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.