How to sex tetras or danios & what to do if they lay unwanted eggs?

Question

I am planning to put either tetras or danios in a 10 gallon. How can I tell if their female or male? Im not wanting to breed them so what do I do of they lay eggs? Am I suppose to move the eggs to a different aquarium and if I do will they still hatch?

Angel Alvarado, LVT · Accepted Answer

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.

How to sex tetras or danios & what to do if they lay unwanted eggs?

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