What is the most useless animal?

It is difficult to label any animal as completely useless, as each plays a role in its ecosystem and contributes to the overall balance of life on Earth. However, some may consider the blobfish to be one of the most useless animals due to its lack of commercial value, unappealing appearance, and lack of any significant ecological impact. The blobfish is a deep-sea fish that inhabits the cold, dark waters off the coasts of Australia and New Zealand. It is known for its gelatinous, blob-like appearance and is often described as one of the ugliest creatures in the animal kingdom. Despite its unattractive appearance, the blobfish serves as an important part of its deep-sea ecosystem, scavenging for food on the ocean floor and providing a food source for other deep-sea creatures. Ultimately, the perceived uselessness of the blobfish is subjective and may vary depending on one's perspective.