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

If they are less than a year old, it is difficult to reliably determine sex. Males will be more streamlined than females and, during breeding season, will develop white "dots" (tubercles) on the gill covers. Their vents will also be smaller and more oval shaped. Females will have larger, deeper bodies (for carrying eggs) and their vents will be rounder and more pronounced.

Allow the male and female to see but not reach each other. When the male is ready to mate, he will build a bubble nest. When the female is ready, she will "bar up" and develop vertical stripes. At this point, they can be introduced to one another for breeding. The time for each fish to be ready depends on age and environmental factors.

There are several species of Tetras and sexing them can be tricky or downright difficult. Neons are the easiest. Look at the neon line along the body. If it is straight, you have a male. If there is a slight curve, you have a female. In other species, it isn't as easy. Females are generally rounded and fatter. Males are longer and slimmer. Male Danios have more vivid and shiny colors than females. Both have yellow between the stripes, but males are more vibrant. Male Danios will also be longer and slimmer while females will be shorter and "thicker". If they spawn, you can leave the eggs and adults in the main tank. The adults will eat the eggs...or fry (baby fish) if they hatch. You can also vacuum the eggs out and discard them.

Depending on the number of fish you get, water quality will be the most important factor in maintaining their health. You'll need quite a large filter for a tank that size. Ideally, choose one that is rated to handle at least twice volume of water in the tank. Mechanical, chemical and biological filtration are all recommended as well as the inclusion of an ultraviolet filter. Silver perch are hardy and can tolerate a wide range of water parameters but thrive at temps between 23 C and 28 C. You may need a heater or heaters capable of maintaining that range. They will spawn anywhere between October and April depending on the age of the fish. Mature fish will spawn early, between October and February, while younger fish will spawn late winter into early Spring. They are an omnivorous species but do well on a commercial pelleted fish chow. One suggestion would be to contact local owners of fish ponds, pond builders and large scale breeders to get more detailed information and to see operations and set up in person.

Beta fish lay eggs and she would need a male to then fertilize those eggs after she lays them. Breeding betas can be very work intensive. Here is a link with great information: fishkeepingworld.com/breeding-betta-fish/ As the babies get bigger, they can graduate to larger food. The babies will mature and need to be separated around 3 months of age. The females can stay together but all the males will need to be separated. Breeding betas requires a lot of tanks/space. I recommend to connect with a local aquarium store and find out if anyone has first hand knowledge. I hope this helps and please feel free to post any additional questions.

Thanks for reaching out about Samlarie. Bass are very aggressive feeders with an ability to open their mouths wide, therefore swallowing other smaller fish. Not sure which type of bass you have but in public aquaria, rockfish are often housed with bass, but should be of similar size. Good luck.

In the aquarium, the female requires a dry land area, with a patch of slightly moist sand, 25 cm (10 inches) in depth, in which she will lay her eggs. Create distinct water and land areas. The land area should occupy one-third of the tank and should be filled with a mixture of peat and sand.