Diversity and forms of the Pseudanthias ventralis species flock: How many are there?

In light of our recent trend in picking apart cryptic species within a given complex like we did for Pseudanthias pascalus and Nemateleotris helfrichi, we continue yet again with a rather massive undertaking. This time with Pseudanthias ventralis. This beautiful species is…

Geminate sisters and their path to speciation

Ever wondered why with an endless possibility of patterns and permutations, there is always somehow a few fish with consistently repeated pattern templates? A few species that share the same overall appearance but not quite the same. That confusing group of…