Roestinae
subfamily of fishes

Roestinae is a subfamily of freshwater ray-finned fishes belonging to the family Acestrorhynchidae. The fishes in this subfamily are known as biting tetras. These fishes are found in South America.
Until recently, the family Acestrorhynchidae contained only the genus Acestrorhynchus. However, taxonomic studies have found that the subfamilies Heterocharacinae (originally placed in the closely related Characidae) and Roestinae (originally placed in the more distantly related Cynodontidae) are actually more closely related to Acestrorhynchus, and now they are also placed in this family.
Begin with the source’s own compact description: “Roestinae” is subfamily of fishes. The dossier treats that line as a proposition to test through Roestinae, subfamily and fishes, not as a finished interpretation.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated May 21, 2026. The linked authority identifier is Q1720627. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Roestinae” 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.