You should avoid most Cichlids due to their aggressive nature. When keeping different species of Labyrinth fish together the smaller fish will quickly succumb to the larger when a conflict arises. Dwarf Gourami Chocolate Gourami. These nest are always built by the male and their size, shape and position depends on the species. The nest is made at the water surface among floating plants.
Some fish incorporate plants into the nest and some are all bubbles.
The male courts the female under the nest, where he curls around her and turns belly up. The eggs are extruded and fertilized from this position. They usually float up into the bubble nest and become almost invisible. This process is repeated several times and the larger species are very prolific. The male practices brood protection.