Flat $7.99 Shipping, Orders over $60, ship free.

A Basic Guide to Rasbora Breeding


Vincent B. here!

Today, we’re going to chat about a topic that’s as exciting as it is rewarding - breeding Rasboras.

What are Rasboras?

Rasboras are small, vibrant, and peaceful fish that are a favorite among aquarium hobbyists. They hail from Southeast Asia and are known for their hardiness and easy care, making them an excellent choice for beginners. There are many species of Rasboras, but some of the most popular ones include Harlequin Rasbora, Scissortail Rasbora, and Galaxy Rasbora.

Preparing for Breeding

Breeding Rasboras isn’t too complicated, but it does require some preparation. You’ll need a separate breeding tank with soft, slightly acidic water. The ideal pH level is between 6.0 and 7.0. The temperature should be kept between 74°F and 82°F.

Keep the tank dimly lit and add some fine-leaved plants. These will serve as a safe place for the eggs to be deposited. Java moss or spawning mops are excellent choices for this purpose.

The Breeding Process

Select a fully grown pair, healthy, with vibrant coloration. Differences between sexes will vary pretty widely by species, but in general, there are a few things you'll notice. Males will generally be smaller, but more brightly colored. Their fins might often be longer as well. Females are usually duller, slightly larger, with notably rounder bellies.

Once your breeding pair is in the isolation tank and they’ve acclimated, it’s time for the magic to happen. You’ll notice the female’s belly swelling up with eggs and the male displaying more vibrant colors. There might even be a notable mating dance or display!

When they’re ready, the female will scatter her eggs on the plants, and the male will fertilize them. This process can take several hours, so patience is key!

Post-Breeding Care

After the eggs are fertilized, it’s best to remove the adult fish to prevent them from eating the eggs. Keep your isolation tank dimly lit, softly aerated and warm, within the parameters described above.

In about 24 to 36 hours, you’ll start to see tiny fry swimming around. They will be almost unnoticable!

At this stage, they should be fed infusoria or liquid fry food until they’re big enough to eat baby brine shrimp. After about a week, the fry will start to resemble miniature versions of their parents.


Breeding Rasboras is a rewarding experience that gives you a front-row seat to the miracle of life. It might seem daunting at first, but with a little preparation and care, you’ll soon have a tank full of vibrant little Rasboras. Happy breeding!

Remember, every fish is unique, and what works for one might not work for another. So, keep observing, keep learning, and most importantly, keep enjoying the process. 🐠💙

Leave a comment

Please note, comments must be approved before they are published