Regal blue tangs (the name we're going with in this article) are identified by their bright blue coloring, oval bodies and yellow, flag-shaped tails. Their pectoral fins are also yellow.

The Problem With Wild-Caught Blue Tangs. Barden leans over a 700-gallon (2,650-liter) fiberglass tank in a humid greenhouse at the Tropical Aquaculture Lab in Ruskin, Florida.

Blue tangs are omnivores, meaning they can eat meat and plants. According to National Geographic, these fish eat plankton. They also use their sharp teeth to scrape and eat algae from coral reefs.

Blue tangs are omnivores, meaning they can eat meat and plants. According to National Geographic, these fish eat plankton. They also use their sharp teeth to scrape and eat algae from coral reefs.

The blue tang exemplifies why saltwater fish are so difficult to breed, Ohs said. Each fish has unique breeding needs, especially in terms of food.

The royal blue tang, also known as the regal blue tang is a gorgeous fish, but it's fascinating for reasons that go far beyond the beautiful colour. This fish start out as eggs, which is not unusual, ...

Blue tangs are omnivores, meaning they can eat meat and plants. According to National Geographic, these fish eat plankton. They also use their sharp teeth to scrape and eat algae from coral reefs.