Fish

Fish evolved 530 million years ago. The lobe-finned fish are considered the ancestors of tetrapods (four-legged animals) and emerged around 400 million years ago.

Keratin Genes & the Rise of Scales in Fish

These early scales provided a vital protective layer, acting like underwater armor against predators, abrasions, and environmental threats. The keratin genes that led to scales are an interesting part of our story. When amphibians evolved onto land, scales near the tips of their evolving toes transformed into thicker protection and traction, eventually giving rise to […]

Keratin Genes & the Rise of Scales in Fish Read More »

Long-Term Memory Evolves: Tiktaalik

Long-Term Memory: By about 375 million years ago, the foundations for long-term memory were likely established among the more complex vertebrates, facilitating survival in increasingly varied and challenging environments. Tiktaalik is a prime example of this evolutionary milestone. It is an extraordinary creature that bridged the gap between aquatic fish and amphibians. With its forward-facing

Long-Term Memory Evolves: Tiktaalik Read More »

Simple Sentience Settles: Haikouichthys

From no sentience or presentience to solidly “Simple Sentience,” early fish during this time represent our ancestral beings that started to suffer and feel the dichotomy of pleasure and pain. Haikouichthys (circa 520 Million Years Ago): Dwelling in the ancient seas of the Cambrian period, Haikouichthys is among the earliest forms of vertebrate life, showcasing fundamental advancements

Simple Sentience Settles: Haikouichthys Read More »

Scroll to Top