fish name please

[metfan581]

i call this fish a otto but what is its scientific name and common name tank requirements and the hole 9 yards the are like a 1-2 inch "sacavanger"

 

[The-Wolf]

they are of the genus otocinclus
the most common species found in lfs's are otocinclus affinis

here is a list of all otos
http/www.fishbase.org/NomenClature/Scien...ary&backstep=-2