Ceylon killifish
The Ceylon killifish is a species of killifish endemic to Sri Lanka. It grows to a length of. Males and females have a black dot at the rear end of the base of the dorsal fin. Females lay 50–150 eggs. The specific name of this fish honours the Inspector-General of Fisheries in India Francis Day, who first reported this fish, although he identified it as Aplocheilus panchax.