scientific name: aphyosemion australe
common name: lyretail killifish, gold australe, orange australe, (and more)
care level: very easy
adult size range: 1.5-2 inches
pH: prefers 5.5-7, can adapt to (and breed in) higher ph
temperature: low to mid 70's
origin/distribution: parts of Gabon and the Gabon-Congo border
temperament: conspesifically aggressive, males will fight for females and territory, but said fights usually don't end in injury.
other than that they are mostly peaceful
compatible tankmates: anything that won't eat them and isn't small enough to be eaten (or isn't a small invertebrate/snail)
diet: prefers live invertebrates but will take dry or frozen foods consisting of said invertebrates. will also eat small snails
minimum tank size for adult: 10 gallon, can be bred in smaller
narrative: it is (apparently) advised to keep multiple females to a male, however my pair is doing fine in their 10 gallon. the main cause for alarm is the male chasing the female in hopes of mating too much, sort of like with guppies, but i haven't seen any of that with my pair. in fact, the female follows the male around the tank, but still sometimes, the other way around. the male will do his little display for her and all, she won't be interested and they'll go their separate ways (for a bit), then go back to their normal routines.
finding something they'd eat was quite a chore, i tried feeding them dry foods like insect based fry foods, krill based flakes, bug bites, and a tiny sample pellet i got somewhere. i have concluded that while they will take tiny foods like fry foods, they will always prefer live or frozen invertebrates. they did also eat the snails that hitchhiked on some of the plants.
other notes: this species comes in a variety of colors, mostly regional variants. some include the "orange australe", "gold australe", and "chocolate".
references: my experience + seriouslyfish, also piscavore's format