Aphyosemion striatum, the Striped Killifish
Non annual, with a lifespan of roughly 3-5 years
Best maintained in trios or groups, with two females to every male
Tank size: 10 gallons for a trio, 15-20 long for a small group, provided planting’s heavy
Very peaceful - one of the few that might work in a carefully arranged community
Is comfortable in slightly acidic to slightly alkaline conditions: pH 6.5-7.2
Temperature from 22 to 26C
Insectivore, usually very easy to feed and takes dry foods readily
Mop spawner - fry are very easy to raise and do not require extended incubation time
Fundulopanchax gardneri, the Blue Lyretail Killifish, Gardneri Killifish
Non annual, 3-5 years approx.
10 gallon for a trio, 15-20 long for a group w/ good planting
Largely peaceful, but definitely not suitable for community aquariums - they can be nippy little beasts
Mop spawner, short incubation time
Gold morph available and many natural variants according to population dispersal
Aphyosemion australe, The Lyretail Killifish
Non annual, 3-5 years approx
Pairs feasible, but trios or larger groups best
10 gallon for trio, 15-20 long for a group. I’m actually finding that my mixed group of 10 is doing excellently in a 15 long
Very peaceful, but likely nippy in a community setting and easily outcompeted by more boisterous fish
Softer water required: pH 5.0-7.0, but they can be adapted to slightly harder conditions. Not advisable, though.
Temp 22-28C. They can go higher, but this is unnecessary.
Mop spawner - they spend a lot of time wiggling around in the mood, too!
Easy to raise the fry - short incubation period
Pseudepiplatys annulatus, the Clown Killifish, the Rocket Killifish
10g for a trio, 15-20 long for a group
Moderately shy, peaceful, possible to house in a carefully chosen community - with care
Again, softer water needed: pH 5.0-6.8 - can go lower, but this shouldn’t be necessary
Fry easy to raise - have a short incubation period
Poropanchax normani, Norman’s Lampeye
Non annual, 2-5 years tops
Schooling fish, and MUST be kept in groups of at least 6, with 10+ being preferable
15 gallon long, minimum, and must be well-planted. Tannins will help emphasise their eyes.
Extremely peaceful and an excellent addition to a peaceful community
pH: 5.0-7.4 - highly adaptable, but extremes and swings MUST be avoided, for obvious reasons
Note: I’ve found them to be very sensitive to particular medications, namely Melafix and Pimafix. If using these, observe the fish closely for a period of up to two hours after dosing and perform a large water change immediately upon signs of stress.
I’ve probably missed a ton of stuff here (it’s 1am and the brain = lard…also just remembered Nothobranchius…dammit), but I hope that helps!