Cat-eLog Right Arrow Loricariidae Right Arrow Hypoptopomatinae Right Arrow Otocinclus

  • Otocinclus mimulus
  • Otocinclus mimulus
  • Otocinclus mimulus
Jump to next section Cat-eLog Data Sheet
Scientific Name Otocinclus mimulus  Axenrot & Kullander, 2003
Common Name Gepunkteter Ohrgitter-Harnischwels (Germany)
Type Locality Small stream (arroyo) at Estancia María Belén, 8 kilometers from Colonel Patricio Colman, 25°40'13''S, 55°05'52''W, río Paraná drainage, Depto. Caaguazú, Paraguay.
Pronunciation auto SINK luss
Etymology Greek, ous, oto = ear + Latin, cinclus = latticework; in allusion to the holes of the head in the ears. mimulus, dimunitive of mimus (actor) a reference to its mimicry with Corydoras diphyes.
Jump to next section Species Information
Size 43mm or 1.7" SL. Find near, nearer or same sized spp.
Identification Otocinclus mimulus is one of four Otocinclus species (O. arnoldi, O. flexilis, O. mimulus, and O. xakriaba) which can have dark blotches on a pale body. O. mimulus is most similar to and can be confused with O. arnoldi. O. mimulus is distinguished from O. arnoldi by having an elevated patch of enlarged odontodes on the postero-dorsal parieto-supraoccipital tip (vs. having a patch of enlarged odontodes on the parietosupraoccipital, and the patch is not elevated).
Sexing Females are larger and broader especially when viewed from above.
General Remarks Mimics Corydoras diphyes. However this mimicry is unusual because the two species occupy different microhabitats and it is hypothesized to operate with a primarily visual predator moving between the microhabitats, tentatively identified as the cichlid Crenicichla lepidota.
Jump to next section Habitat Information
Distribution South America: tributaries of río Monday, a right bank tributary of the río Paraná in Paraguay.
La Plata, Paraná, Monday (click on these areas to find other species found there)

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Other Parameters Per the original description, collected from a small stream with dark, slightly turbid water. The substrate was soft with abundant leaf litter and branches.
Jump to next section Husbandry Information
Breeding Unreported.
Breeding Reports There is no breeding report.
Jump to next section Further Information
References Ichthyol. Explor. Freshwaters Vol. 14, No. 3, pp249-272, October 2003.
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Last Update 2017 May 13 01:49 (species record created: 2010 Jul 13 09:29)