Which stickleback does not receive parental care from the male?

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Lined seahorse (Hippocampus erectus) — gasterosteiform Lined seahorse (*Hippocampus erectus*).

In the family Gasterosteidae (order Gasterosteiformes), the white stickleback (Gasterosteus species) is the exception among its relatives, as it does not receive parental care from the male.1

In all other stickleback species, the male takes on the role of primary caretaker. After the female lays her eggs in a nest constructed by the male, he fertilizes them and subsequently guards the nest, aggressively defending the eggs and young from intruders while fanning the eggs with his pectoral fins to provide necessary aeration.1