Paracanthurus hepatus

The blue coloring of the young turns gray on their belly and back once they reach adulthood. Somewhat unobtrusive, the hippo tang likes having hiding places. Size: 18 cm

• Apolemichthys xanthurus
• Chaetodon auriga
• Arothron nigropunctatus
• Sphaeramia nematoptera
• Lienardella fasciata