> what the heck a glass fish is.

In Biodiversity, a glass fish includes a few group of Asian fishes that show crystal transparent bodies to hide from predators. Specially when young. They are vertebrates that evolved transparent muscles. Two gens are kept in aquariums: Parambassis ranga and several ghost catfish from gen Kriptopterus.

We can assume that the programmer likes aquariums. The word Yakarta is not random, as is related with the catfishes distribution.