Otto season?

[Tyler_Fishman]

I've always wanted to get my hands on a few ottocinclus specimens for my tank, however I've never been able to find them in any of the petstores in my area, I could check a fish store that's really far away; it's not convinient nor are the ottos desperately needed for the tank I'm just interested: is there a season where otto cats are shipped into pet stores the most