| “ | This is Haikouichthys. He's the size of your thumbnail, but he's an evolutionary giant. He's the first ever fish, our earlier known ancestor. | „ |
| — Allen, about Haikouichthys in Water Dwellers | ||
Haikouichthys (name meaning ''Fish from Haikou, Kunming'') is a genus of craniate that originated during the Early Cambrian in what is now Asia and North America. Measuring only an inch long, this fish (the smallest ever discovered) is also the very first vertebrate.
In the Series 1 episode "Water Dwellers", a school of Haikouichthys were brought to the park from Early Cambrian North America, 530 million years ago. They reside in the Primeval Aquarium Enclosure.
Facts[]
Era & Discovery[]
Physical Attributes[]
Behavior & Traits[]
Prehistoric Earth: A Natural History[]
Series 1[]
Haikouichthys made its debut in Water Dwellers.