What is a master … ?

[SteveKing88]

In several of the Aquarium co-op  videos, Dean is referred to as a “master breeder” and Cory is referred to a a “master aquatic horticulturist”.

Are these some kind of official certifications? Or, are these more casual titles?

[HH Morant]

The master titles are similar to my titles - gentleman, scholar and Renaissance man.

[drewzero1]

Some aquarist clubs have breeding programs with titles/ranks. I think I remember hearing that that was why they always call him that. (I'm sure it also looks great in a video title!)

As I understand it, different clubs have different requirements like numbers of species, categories of species, duration of proof, needing to raise a second generation to maturity or not. ISTR somebody joking that Dean wouldn't be considered a master breeder by their club's stricter requirements, though I may remember wrong.