My Daughter’s First Pet—the Next Big Model Organism?

Bettas were likely the first fish welcomed into human homes. Now, scientists are welcoming them into the lab to learn how genes dictate their appearance and behavior.

christie wilcox buehler
| 11 min read
a purple betta fish with white fins in a planted tank

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ABOVE: Sky Banana posing in her tank
CHRISTIE WILCOX

“What should her name be?” I ask my soon-to-be four-year-old daughter, Bianca. She and I had just picked out her first pet: a female betta fish. My daughter’s favorite color (for now, anyway) is purple, so even though the pet store had a whole display full of bettas to choose from, she was immediately drawn a lavender-toned variety of the “elephant ear” or “Dumbo” phenotype, so named because of its particularly large pectoral fins that resemble the ears of elephants.

“Sky,” she answers confidently.

“That’s a beautiful name,” I tell her. “A beautiful name for a beautiful fish.” But my daughter is not satisfied; she feels the fish also needs a middle name. “Banana!” she declares without hesitation and with copious giggles. “Sky Banana it is,” I say with a smile.

Most betta owners are drawn to the fish because of ...

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