I would highly reccomend vents as a first thumb. They are hardy, bold, and about as forgiving as a thumbnail frog gets. Scott MacDonald sells great vents
. The ones I got from him are breeding like rabbits! Standard lamasi are frogs that I would wait on getting. They can be touchy frogs. I waited a few years before working with frogs like that, and am now delving into a lot of the rarer frogs now that I have 3 years in the hobby under my belt. Some people would consider that fast as well, although it really varies from person to person.
Jordan
