Coronaicthys

"Coronaicthys has developed a stronger poison to deter predators even further. Even though it is still nonfatal, this poison is strong enough to induce nausea and swelling to whoever consumes it. Small amounts of the Imperiumboletus fungus also reside inside of certain species of the Coronaicthys, helping make the poison more effective without being strong enough to control the Coronaicthys itself. This fish has also developed a striped pattern and a larger horn to drive predators away, and its tail fin has split for better mobility."

-DinoCoat

Coronaicthys has a large pattern of stripes on its torso and has split up even more of its fins, giving it a wacky design. The horn on its head has grown larger, and a primitive jaw is visible. Just like its ancestor, Coronaicthys is omnivorous and contains toxins inside of its body. It seems that some of the species will use the Imperiumboletus fungus to their advantage, making even better toxins for their defense.

Trivia
Coronaicthys evolved from Toxiculum in Gen 2.