Geophagus altifrons
species of fish
Geophagus altifrons are a freshwater eartheater cichlid, native to the Amazon River Basin, Brazil. It is also commonly known as the threadfin eartheater or the surinam eartheater.
Introduced to Singapore and considered an invasive species, it thrives in slow-moving streams and reservoirs, where it works as a sand sifter in most environments like most Geophagus species. Its ecological impact on its adopted habitat is still unknown.
A member of the family Cichlidae, it can grow up to 22.5 cm (8.9 in) in standard length. It is benthophagous by nature, taking mouthfuls of substrate (hence its common name) and sifting for edible items, with the remaining materials being expelled via the mouth and gill openings. It prefers clear and blackwater environments as opposed to turbid white waters.
Geophagus altifrons are one of the most common species of Geophagus found in the pet trade, often wild caught and falsely labeled as Geophagus surinamensis within the hobby.
“Geophagus altifrons” enters the record as species of fish. Crown Archives preserves that source wording while asking what Geophagus, altifrons and species can confirm, complicate or overturn.
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“Geophagus altifrons” is worth following because a concise public description often conceals a longer documentary argument. Here, Geophagus, altifrons and species provides the most credible route into that argument.
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 Dec 18, 2025. The linked authority identifier is Q128661. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Geophagus altifrons” 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.