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Down arrow Cat-eLog Data Sheet
Scientific Name Otocinclus mariae  Fowler, 1940
Common Names Maria's Oto
Dwarf Sucker, Dwarf Otocinclus, Oto
Type Locality Boca Chapare, Río Chimore, tributary to Río Ichilo, about 15°58'S, 64°42'W, Río Mamoré system, Bolivia.
Pronunciation auto SINK luss - MAR ee ae
Etymology Greek, ous, oto = ear + Latin, cinclus = latticework; in allusion to the holes of the head in the ears. 
Articles
Article Link - Shane's World Reproduction The Dwarf Sucker, Otocinclus vestitus
Down arrow Species Information
Size 33mm or 1.3" SL. Find near, nearer or same sized spp.
Identification Very similar to O. vittatus.
Sexing Females are larger and broader especially when viewed from above.
Down arrow Habitat Information
Distribution South America: Upper Madeira and lower Amazon River basins.
Amazon, Lower Amazon (click on these areas to find other species found there)
La Plata, Paraná, Paraguay (click on these areas to find other species found there)
Amazon, Middle Amazon (Solimoes), Madeira, Upper Madeira (click on these areas to find other species found there)

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IUCN Red List Category Not Evaluated
pH 5.5 - 7.5
Temperature 21.0-26.0°C or 69.8-78.8°F (Show species within this range)
Down arrow Husbandry Information
Feeding Initially algae, add a shoal to an "algaefied" tank and then supplement diet with sinking tablets and the usual cucumbers / lettuce or courgette (zucchini).
Furniture Large leafed plants and vertical flat rock surfaces (especially slate). Not essential, but likes bogwood and a large rounded substrate. Live plants seem essential to the long term survival of this fish.
Compatibility Peaceful.
Suggested Tankmates Keep in groups (preferably at least six) with any small to mid-sized community fish.
Breeding See Shane's World article.
Breeding Reports There is no breeding report.
Down arrow Further Information
Reference Proceedings of the Academy of Natural Sciences of Philadelphia v. 92, pp 83, Figs. 41-43.
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There are 39 registered keepers, view all "my cats" data.
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There are 7 records of this fish being seen, view them all.
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Last Update 2020 Oct 24 01:46 (species record created: 2004 May 19 00:00)