They looked like neon tetras, or zebrafish, in shape and pattern, except that their size ranged from less than an inch long to twice as long as Danny was tall. Their stripes glowed with bright, candy-vivid colors. Their scales were transparent, their skeletons luminous.
Danny held his breath as they flowed around him, brushing against him. Several of the smaller ones swam through his hair as if it were some kind of seaweed. It probably looked like that, waving as it was in the faint ectoplasmic current of the Ghost Zone.
The massive school of fish made their own silvery-bright river through the green sky. Danny wondered if they were going to spawn somewhere, or if this was just how they were all the time.
No, the ghost that pointed him this way said it was a migration. That implied a purpose of some sort, a regularity. At least, it did when it came to earth animals.
He should probably stop standing in their way, though, no matter how cool it looked.
(He did not notice the small fish hiding in his hair until he got home. Under the lights of his bedroom it almost looked normal.)
(He started looking up fish tanks online.)