Life will find its way. It is a prove of the old age of this tank. Microsorum pteropus, there are type normal (008) to type F (008F). Why this trident wasn’t the 008G? At the early stage, only one leaf got trident, a real trident shape with 3 points only, no more, no less. After prolonged period, the newer leave close to that single leaf all grew into same trident shape. Now new young leaf still keeping the very same funny shape.