Wallaciia regani
species of fish

Wallaciia regani is a species of cichlid native to South America. It is found in the Amazon River basin and in the Trombetas River at Cachoeira Porteira, Brazil. This species reaches a length of 7.9 cm (3.1 in).
The fish is named in honour of Charles Tate Regan (1878–1943), of the Natural History Museum in London, who was the last ichthyologist to revise the genus Crenicichla, where this species was formerly placed, before Ploeg took on the task.
References
Kullander, S.O. (2003). "Cichlidae (Cichlids)". In R.E. Reis; S.O. Kullander; and C.J. Ferraris, Jr. (eds.). Checklist of the Freshwater Fishes of South and Central America. Porto Alegre, Brasil: EDIPUCRS. pp.
“Wallaciia regani” enters the record as species of fish. Crown Archives preserves that source wording while asking what Wallaciia, regani and species can confirm, complicate or overturn.
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Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Oct 19, 2025. The linked authority identifier is Q276499. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1878, 1943 and 2003.
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This entry incorporates text from “Wallaciia regani” 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.