Isbrücker & Nijssen, 1988
Acanthicus adonis, the adonis pleco or polka dot lyre-tail pleco, is a large species of armored catfish. It was originally described from the lower Tocantins River in Brazil, but individuals resembling the species have also been recorded from Amazonian Peru. The species is occasionally seen in the aquarium trade, but its massive adult size and territorially aggressive behavior means that a very large tank is required. These fish are opportunistic omnivores.
It is dark brown to black with numerous white spots as a juvenile. As the fish matures, the spots become less numerous and smaller, often disappearing entirely in large adults. Its close relative A. hystrix always lack white spots, regardless of age. In contrast, A. adonis lacks the vermiculated pattern often (but not always) found on the underparts of A. hystrix.
- PlanetCatfish: Acanthicus adonis. Retrieved 17 May 2013
- Froese, Rainer and Pauly, Daniel, eds. (2011). "Acanthicus adonis" in FishBase. December 2011 version.
- Chamon, C.C. (2016): Redescription of Acanthicus hystrix Agassiz, 1829 (Siluriformes: Loricariidae), with comments on the systematics and distribution of the genus. Zootaxa, 4088 (3): 395–408.
- "Acanthicus adonis". SeriouslyFish. Retrieved 31 October 2017.
- Chamon, C.C. (2011). "Revisão taxonômica e relações filogenéticas do grupo Acanthicus (Siluriformes, Loricariidae)". São Paulo State University.
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