In the pipefish, the male cares for the offspring.
Apart from the ones he sucks the life out of.
The discovery of filial cannibalism in the pipefish is now creating a stir in the research world.
The pipefish, which is related to the seahorse, has an unusual way of organising childcare. In this fish species it is the father who takes care of the eggs, which he receives from one or more females and then looks after in a brood pouch on the tail, where a kind of male equivalent of the placenta provides the embryos with oxygen and nutrients.