Differentiate between Otocinclus cat and flying fox

[maverick786us]

I am planning to have a pair of Otocinclus Cat fish for my 6 months old 37L aquascape. But these fishes looks flying fox. How do I differentiate

 

[hypnogogia]

Otos are much smaller than flying fox and have different colouration. Just google search images for both and you'll see. I'd also say that 37L is much too small for Otos and they are a fish best kept in groups.

 

[AlecF]

That's a good size of tank for shrimp.