Functional Hermaphroditism and Self-fertilization in a Serranid Fish

Science  23 Jan 1959:
Vol. 129, Issue 3343, pp. 215-216
DOI: 10.1126/science.129.3343.215


Each mature individual of Serranellus subligarius, regardless of size, has at the same time both motile sperm and eggs. Embryos and larvae were produced from artificial fertilizations and from isolated fish kept in aquaria. Mating behavior of pairs and groups of hermaphrodites shows two types of behavioral patterns involving different color changes.