Otocinclus mimulus

{{Short description|Species of fish}}

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| genus = Otocinclus

| species = mimulus

| authority = Axenrot & S. O. Kullander, 2003

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Otocinclus mimulus is a species of armoured catfish found in small tributaries of the Monday river, itself a tributary of the Paraná river.{{Cite web|title=Otocinclus mimulus|url=https://www.fishbase.se/summary/62044|access-date=2021-01-19|website=www.fishbase.se}}

Otocinclus mimulus is a Batesian mimic of Corydoras diphyes. C. diphyes is inedible to many species due to its bony armor and so individual O. mimulus that look more similar to C. diphyes are less likely to be eaten by predators like Crenicichla lepidota. O. mimulus is named for its mimicry of C. diphyes.Axenrot, Thomas E., and Sven O. Kullander. "Corydoras diphyes (Siluriformes: Callichthyidae) and Otocinclus mimulus (Siluriformes: Loricariidae), two new species of catfishes from Paraguay, a case of mimetic association." Ichthyological Exploration of Freshwaters 14.3 (2003): 249–272.