The Royal Gramma, also known as the Fairy Basslet, is a small but strikingly beautiful marine fish known for its vibrant purple ... to any aquarium. The Harlequin Rasbora is a small freshwater ...

These animals had been some of the first freshwater crayfish from New Guinea to be exported as aquarium pets over 21 years ago. Ever since, the hazy blue and purple crayfish have become popular ...