Pseudepiplatys annulatus (Clown Killifish) - even smaller than the Badis(!), these guys are a favorite because they look like little rocketships when they're moving. The blue and red on their tails is iridescent and really striking in real life.
Striped panchax Killifish Tank Size: 30 Gallons Size: 4" Temperature: 76-80°F pH 6.0 – 7.0 Hardness: 5-20 NK° Lifespan: 4 years Tank Region: Top Population: 4-5 fish per 30 gallons Notes: Likes floating plants to hide in. You need a good lid on your tank and might want to lower the water level an inch or two because these fish are good jumpers.
Apistogramma Panduro/ pandurini / nijsenni - ~3.5" dwarf cichlid from Peru / SA. Male is shiny silver blue and female is yellow with black spots. Males and females sometimes have a red band on their tail