Large Finned Lampeye Killifish

The Large Finned Lampeye Killifish is a peaceful fish that is an excellent species for the planted aquarium. Its “lampeye” name refers to the horizontal crescent at the top of its eye that seems to “glow” under the aquarium light. It is much more colorful than most other lampeye species due to its iridescent multi-coloration, especially in the case of males. Native to southwestern Cameroon, this fish is excellent for even beginners. It will often spawn in the aquarium and it is a non-annual killifish that is much longer lived than some of its “annual” relatives.

The Large Finned Lampeye Killifish occupies the top level of the water column almost exclusively. It is not afraid to jump, so it must be kept in an aquarium with either a lid/hood/canopy or at least a significantly lowered water level. It will not eat or bother plants and it will appreciate the cover, especially with floating plants. This species inhabits areas of significant water flow, so it requires similar conditions in the aquarium, and it is not particularly tolerant of declining water quality.

While this fish is compatible with other peaceful fish and invertebrate species that thrive in a planted aquarium, care must be taken to not add species that will outcompete the Large Finned Lampeye Killifish for food. Also, other fish species will eat most of the fry of the Neon Stripe Lampeye Killifish when it is spawning, so other tankmate species are not recommended if dedicated breeding and rearing of fry is desired. While many killifish are kept in pairs, the Large Finned Lampeye Killifish seems to thrive and show the best coloration in groups. It will feel most secure when kept in groups of 6 or more. It is safe with adult dwarf shrimp, but like most fish, it may eat some shrimp fry.