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.

megastom(above) Dominant male in aggressive state.aMAdom.jpg

(above) Subdominant male in neutral state.

(above) Dominant male in neutral state.

(above) Female in aggressive state.

(above) Female in neutral state.