SEASIDE – At the Seaside Aquarium, dozens of fish have been born from what many would consider quite an unlikely source: a male fish.

Seaside Aquarium/kgw.com photo

A baby pipefish.

Pipefish are long, rounded creatures related to the sea horse, that have an unusual life process. The female pipefish has the eggs originally, but transfers them to the male. He fertilizes them, and then he is the one responsible during the remaining gestation period.

The aquarium’s pregnant male has so far given birth to at least 25 fish, which look like tiny slivers when they’re born. The baby fish, within view of aquarium visitors now, are about half an inch in length and about as wide as a blade of grass.

"We are not sure how long the baby pipefish will be on display," said Tiffany Boothe, an education specialist with the Seaside Aquarium. "The aquarium has had pipefish in the past give birth, but because of their size and fragility when born, we have had no luck keeping them alive. We are going to try a slightly new tactic, though we are not too optimistic that it will work. Because of this we also plan on releasing some of the babies into a local estuary."

The new tactics involve leaving them where they are this time, Boothe said. In the past, they've tried a variety of approaches to help these babies survive, mostly involving taking them out of the tank and putting them in another by themselves. They've tried variations on that theme, such as a tank with filtered water, without filtered water, and other combinations.

Seaside Aquarium/kgw.com photo

Pipefish are related to sea horses.

"Instead of putting them in another tank, we'll just do nothing," Boothe said. "We'll leave them in there, because that tank is a lot like the environment they come from, with its fauna and so on. It's also got raw water pumping in there, so there's lots of phytoplankton."

In natural habitat, pipefish live in shallow water among eelgrass, algae, and other types of vegetation in estuaries and bays.

Boothe said they're expecting even more babies. With the eggs of as many as three females involved, it could mean there are dozens more waiting to be born, all inside the male in various stages of gestation.

"Spawning for pipefish begins in May when the female pipefish passes her eggs to the male," Boothe said. "The courtship between the male and female tends to be an elaborately choreographed display, where female and male entangle themselves around each other over and over again. They look as if they are dancing. The male may receive eggs from two to three different females and can carry up to 225 eggs."