Killifish and pygmy cories would work.
As to which species of killifish depends on what you like. Some of my preferred killis are Epiplaty dageti and Aphyosemium gardneri. But there are lots to choose from.
Unless you have experience hatching and rearing fish eggs you are better off buying young fish. That way you don't have to worry about fry foods and you can usually pick a few prs (males & females). Killifish mature quickly and breed when about 3 months old. But they also die after about 2 years.
If you have a heavily planted tank with lots of Java Moss and Water Sprite, and the adults are fed well, you can usually leave the babies in with the adults. Or you can scoop them out from among floating plants (Water Sprite) and grow them up in another tank/ container. Killifish do not breed out of control so you won't have 1000s, and you can usually sell them easily. If you do want to breed them, only keep 1 species per tank or keep fish from different genus, eg: 1 species or Epiplaty & 1 species of Aphyosemium.
As to which species of killifish depends on what you like. Some of my preferred killis are Epiplaty dageti and Aphyosemium gardneri. But there are lots to choose from.
Unless you have experience hatching and rearing fish eggs you are better off buying young fish. That way you don't have to worry about fry foods and you can usually pick a few prs (males & females). Killifish mature quickly and breed when about 3 months old. But they also die after about 2 years.
If you have a heavily planted tank with lots of Java Moss and Water Sprite, and the adults are fed well, you can usually leave the babies in with the adults. Or you can scoop them out from among floating plants (Water Sprite) and grow them up in another tank/ container. Killifish do not breed out of control so you won't have 1000s, and you can usually sell them easily. If you do want to breed them, only keep 1 species per tank or keep fish from different genus, eg: 1 species or Epiplaty & 1 species of Aphyosemium.