Bright colors? Check. Unique looks? Check. Fun to watch? Absolutely. Discus fish check all the boxes for popular freshwater tropical aquariums. So, it’s no wonder they’re so popular among hobbyists.

The men's discus throw looks set to be a thrilling competition as the best in the world go head to head in France this summer. Mykolas Alekna of Lithuania, who is the current world-record holder after ...