noun
oto
noun
1
A small freshwater algae-eating fish, short for otocinclus, popular in aquariums.
"She added a few otos to the tank to keep the algae down."
2
A member of a Midwestern Native American people who speak the Chiwere language.
"The museum exhibit covers the history of the Oto and their neighbors."
How to Use Oto
Learner’s notesIn plain EnglishUsually the aquarium fish nickname, or the name of a Native American people.
Word Forms
otos plural
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She added a few _____ to the tank to keep the algae down.
Etymology
The fish sense is simply a shortening of "otocinclus."