Livebearers
Young are born free-swimming. The practical challenge is not hatching eggs but preventing adults from eating fry and avoiding rapid population growth.
Egg scatterers
Eggs are released among plants, mops, marbles or mesh. Many adults eat eggs, so protection or prompt separation is often required.
Adhesive eggs and surface spawners
Eggs may be placed on leaves, glass, slate, wood or a cave wall. Parents may guard them, ignore them or eat them depending on species and experience.
Bubble-nest builders
The male often builds and tends a surface nest. Calm water, cover and controlled introductions matter.
Mouthbrooders and parental cichlids
One or both parents may carry, guard or shepherd young. Territorial behaviour can become the main management issue.