Apistogramma megastoma sp. nov is described by Uwe Römer et al. in Vertebrate Zoology (open access paper). A. megastoma is a mouth-brooder (only females are known to mouth-brood) and has an unusually large mouth compared to other Apistogramma cichilids, hence its name “megastoma,” which means “big mouth.”
Below are the many different appearances of the new species.