Breeding fish can be a rewarding and potentially profitable hobby, and nano fish, or small fish that are well-suited to living in smaller aquariums, are a popular choice for many aquarists. If you're interested in breeding nano fish as a source of income, here are a few easy species to consider:
Guppies: Guppies are small, hardy fish that are easy to breed and can produce several fry (baby fish) per month. They are also popular among aquarists, making them a good choice for selling.
Neon tetras: Neon tetras are another small and easy-to-breed species that are popular among aquarists. They are peaceful and can be kept in small groups, making them a good choice for community tanks.
Endlers: Endlers are a type of livebearer, like guppies, which means they give birth to live young rather than laying eggs. They are small and easy to care for, and their bright colors make them attractive to aquarists.
Cherry shrimp: Cherry shrimp, also known as Neocaridina heteropoda, are popular among aquarists due to their vibrant red color and ease of care. They are relatively easy to breed and can produce a large number of offspring in a short amount of time.
When breeding fish for profit, it's important to have a good understanding of the specific care requirements of the species you are working with and to follow proper breeding techniques to ensure healthy offspring. You should also research the market to determine what types of fish are in demand and at what price you can sell them for. Finally, it's a good idea to have a solid plan in place for marketing and selling your fish to potential customers.