More commonly known by the scientific name Fundulopanchax gardneri or Fundulopanchax gardneri gardneri, Clausen’s Steel-Blue Killi has several nicknames. These fish have been called Steel-Blue Killifish, Gardner’s Killi and Blue Lyretail. These fish can be identified by the sky blue coloration exhibited by males of the species which is overlaid with bright red spots. Females are typically brownish in color and may have dark brown spots and a light-colored belly. Males of the species have blue fins ornamented with red stripes and a yellow border. Clausen’s Steel-Blue Killis are a semi-annual species known to inhabit both temporary and permanent bodies of water in Cameroon and Nigeria. These fish are typically found in streams and ponds throughout the rainforest and savannah.