by Linda Paquette Male tetras are generally a month or two older than females for successful spawning to take place. Males are typically slimmer and more colorful than their female companions are. When viewed from above, the female tetra is distinguishably plumper and rounder because of the build-up of eggs within her body. Two weeks before breeding tetras, separate males and females within the same tank. This is done simply by putting a clear divider between them, which not only gives you...