Previously, more than 200 species of this family belonged to the family rivulaceae. Except notobranchius, most aplocheilovyh have a narrow pike-like body length from 2 to 20 cm Dorsal fin shifted back, small. The anal fin is long and the ventral fins are small. The most brightly colored species of the order belong to the family. However, this color is an advantage only for males. Females are painted pale, expressionless.
Habitats are grassy alkanovich small shallow stagnant or slowly flowing waters of tropical forests and savannas. Epiplatys and fundulopanchax often live in areas of flooding, Nothobranchius — in temporary pools which dry up for several months each year. Continue reading
Most viviparous fishes belong to the family Poeciliidae Cyprinodontiformes squad. They produce their offspring not in the form of eggs, but in the form of already formed fry, which have phenomenal adaptive properties. They immediately after birth descend to the bottom, hiding from predators and their parents in the bottom vegetation, and provide themselves with the first food there. With the growth of their ability to hide in the vegetation is only growing, and they often can be found near the surface. At the age of 6 months, they are already able to continue the birth.
In nature, all 140 species of viviparous fish can be found in the standing or slow-flowing water of freshwater bodies in South and Central America and Southeast Asia, as it is there that the environment can offer them warmth and abundance of vegetation. Continue reading