The male fish who eat their eggs because they want better babies

The blenny males look after the eggs - but sometimes eat them — The blenny males look after the eggs – but sometimes eat them

By Alice Klein

Raising kids is hard work. Male blenny fish sometimes eat their babies if they think they’re not worth the effort and want a better batch.

The barred-chin blenny (Rhabdoblennius nitidus), a fish found in Asia, has an unusual parenting arrangement. After females lay eggs, they leave their male partners in sole charge of caring for them until they hatch.

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This arrangement usually works well. But if the female leaves only a small number of eggs – less than one thousand or so – the …

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