Things You'll Need
- Separate male, female and breeding aquariums
- Live fish foods
- Water testing kit
- Thermometer
- Aquatic plants
Instructions
Separate the male and female tetras. Female tetras tend to be much larger and rounder than male tetras. Male tetras are usually much more colorful than the female tetras. Place the males in one aquarium and the females in another.
Feed the tetras a diet of live foods, such as bloodworms. This live diet ensures that the tetras will be in the best possible health when it comes time to breed. This rich diet also encourages the tetras to breed.
Set up a breeding aquarium in a dimly-lit, quiet area. Test the pH level and temperature of the aquarium water. Research the pH and temperature needs of your specific tetra type and make sure they match.
Fill the bottom of the breeding aquarium with leafy or mossy plants. These plants will catch the eggs as the fall from the breeding fish. Some tetras, such as the Glowlight tetra, prefer less vegetation, while others prefer denser vegetation. Research your particular tetra type to find out its specific needs.
Observe the male and female fish. As the females get ready to breed, they will become plumper. The males will become more colorful when they are ready to breed. Select one colorful male and one rotund female tetra and place them in the breeding aquarium.
Keep the breeding aquarium dimly lit. This semi-darkness encourages the tetras to breed. If you don't feel that the area where the aquarium is is dark enough, you can cover the aquarium with a cloth or towel to block out more light.
Wait for the tetras to breed. Generally, Characins breed about two days after being introduced to the opposite sex. However, some fish may need more time to acclimate to the new habitat before breeding. Some tetras have elaborate mating rituals, while others are more simple. Research your type of tetra so you know what to watch for.
Remove the tetras from the breeding aquarium after spawning. Adult tetras are known to eat younger tetras or the eggs. The eggs will hatch in about a day, depending on species.