that grows like a trident.males have blue and females have green eyes.everone finds this to be a striking lovely tetra

Black Emperor Tetra The Black Emperor Tetra is one of the best tetras for the ‘general’ community setup. It is lively, peaceful and its colors offer a pleasing contrast to those of many other species. It’s a good tankmate for most commonly available livebearers, danionins, rasboras, other tetras and peaceful bottom dwellers such as Corydoras or smaller Loricariids. Worldwide Fish…