Surgeonfish, also known as tangs, are popular in the aquarium trade for their striking colors. These fish can ... lighten its blue hue in response to stress or social cues. This color change ...

Tropical colours are everywhere ... Below the water, eye-catching aquarium fish flicker over a lime and pale pink reef, decked with blue starfish and golden sponges. Transportation is a feast ...

Color is important to fish. It’s used for camouflage, mate selection and defense. While easily seen in tropical aquarium fish ...