Least Killifish
Heterandria formosa
Also sold as Heterandria formosa (Mosquito Fish).
One of the world's smallest fish; a tiny peaceful livebearer for nano tanks.
More than a design — your whole aquarium, handled
Skapelab plans the scape and everything you need to build and run it.
A design for your tankA hand-illustrated layout, sized to your exact tank and skill level.
Stocking picked for youCompatible fish & invertebrates, chosen and quantified for the tank.
Exact shopping listEvery plant, stone and piece of gear — with how much of each to buy.
Step-by-step setupSubstrate, cycling, planting and stocking, in the right order.
Care & remindersA maintenance schedule with reminders when each task comes due.
Water-test logbookLog your parameters and track the tank on your own dashboard.
Care at a glance
livebearerType
0.8"Adult size
5 galMinimum tank
4+Group size
peacefulTemperament
68-82°FTemperature
7.0-8.0pH
8-20GH
Micro foods, biofilmDiet
allSwimming zone
easyCare level
YesPlant-safe
Build a tank for Least Killifish
Design a complete aquascape around Least Killifish — Skapelab picks compatible tankmates, plants, hardscape and gear, sized to your tank. Free.
Open the design studio →