What significant sensory structure is surprisingly absent in the cave-dwelling *Sueviota aethon*?

Answer

Cephalic sensory canals and pores

*Sueviota aethon* completely lacks the cephalic sensory canals and pores that are usually important for fish living in low-light or dark environments to detect predators and food.

What significant sensory structure is surprisingly absent in the cave-dwelling *Sueviota aethon*?
speciesdiscoveryfishgoby