Emeraldking-aquatics livebearers

References literature

Mechanisms of Development (2004) 639 - 645
Review: A comparitive view on sex determination in medaka
Manfred Schartl

Journal of morphology, Structure and function of placental exchange surfaces in goodeid fishes, published 2015
By Joachim f. Schindler

Superfetation in livebearers
Poecilia nieuws, May edition 2020
By Stan de Jong