Petco Text Logo
Petco Pet Logo

How to sex Australian Bass for breeding and what supplies are needed?

Updated On September 23rd, 2025

I have a Australian Bass and i want to breed it with another. How do i know if its male or female and what will i need for breeding the pairs.

1 Answer

Most Helpful Answer

Image profile

Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on May 23rd, 2017

Males are much smaller than females. Males will reach sexual maturity between 3-4 years of age, females won't be ready until they are 5-6 years of age. You can check the vent of the fish. Males will have an oblong opening while the females will be more circular. In the springtime, mature females will become fat with roe (eggs). During this time of year, you can gentle massage the abdomen of an adult fish, if a milky substance comes out then you have a male. This is its sperm. You can follow this link to find information regarding breeding and the necessary supplies. http://www.aquablueseafoods.com.au/bass-breeding.shtml

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored