The domestic Goldfish is one of the most popular fish kept today, and also one of the very first to be kept indoors. Contrary to dated belief, goldfish cannot be kept in tiny, unfiltered bowls. They should get quite large (about the size of a sweet potato) and live for decades. These are intelligent fish that will come to recognize their owners; the idea that their memory span is only 3 minutes has been disproven by multiple scientific studies. An ideal environment for goldfish is a 30-40 gallon tank with at least 2-3 goldfish, and nice strong filtration.
Pom-Pom Oranda are a specific strain of Oranda that, instead of developing a fleshy wen over the entire head, only develop fleshy nostrils, giving the appearance of two pom-poms on their face. These are juveniles, around 1.5" long without the tail. They are just starting to develop their pom-poms.